Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21)

Item no: 2162964 | 045242226214
$129.99
1,300  Estimated 
-+



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  • Sub Brand: M12 Hackzall
  • Voltage: 12 volts
  • Battery Type: Lithium-Ion
  • Corded or Cordless: Cordless
  • Product Type: Reciprocating Saw Kit
  • Batteries Included: Battery Included
  • UL Listed: No
  • ETL Listed: No
  • Keyless Blade Change: Yes
  • CSA Listed: No
  • Switch Type: Variable
  • Strokes per Minute: 3000 spm
  • Color Family: Red
  • Variable Speed: Yes
  • Adjustable Shoe: Yes
  • Length of Stroke: 1/2 in.
  • Replacement Battery Ace No. 2472405 (Sold Separately)


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What people are saying

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REVIEW SNAPSHOT®

by PowerReviews
Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21)
 
3.6

(based on 17 reviews)

Ratings Distribution

  • 5 Stars

     

    (6)

  • 4 Stars

     

    (6)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (4)

76%

of respondents would recommend this to a friend.

Pros

  • Easy to use (15)
  • Fast cutting speed (6)
  • Good design (6)
  • Good power output (6)
  • Short charge time (6)

Cons

No Cons

Best Uses

  • Home improvement (6)
  • In the field (6)
  • Remodeling (5)
  • Building maintenance (4)
  • In the workshop (4)
    • Reviewer Profile:
    • Avid do-it-yourselfer (8), Professional (8)

Most Liked Positive Review

 

Great tool

I'm a mechanic by trade, and needed a compact reciprocating saw that could get in tight places a regular Sawzall or air powered die grinder with a cutoff wheel couldn't get to and a...Read complete review

I'm a mechanic by trade, and needed a compact reciprocating saw that could get in tight places a regular Sawzall or air powered die grinder with a cutoff wheel couldn't get to and a torch would be unsafe. The Hackzall was the answer. Cut right through hardened grade 8 bolts very quickly on suspension components. I've even worked it much harder than one would think this tool could handle, cutting up steel racking and 55 gallon drums.
I would definitly suggest a spare battery for jobs that require long run times.

VS

Most Liked Negative Review

 

decent, but don't expect a Sawzall

A great little power saw to grab for cutting modest size things, and for work where getting to the A.C. is inconvenient or impossible. It's light weight means you can operate it with...Read complete review

A great little power saw to grab for cutting modest size things, and for work where getting to the A.C. is inconvenient or impossible. It's light weight means you can operate it with one hand, which is nice in an awkward spot.Being a 12v device, like I said in the title, it's not going to replace your Sawzall. You will want to purchase the high capacity 12v battery to use with this, as it can suck a standard battery empty fairly quickly.My biggest gripe with this tool is that I got a very small amount of water in it (a little tap water ran out of an empty pipe I was cutting, and some ran down the blade into the tool) and it immediately seized up. This was not covered under warranty by Milwaukee; they simply offered to replace it for [$]. You mean the price of a new tool? No thanks. Just to add insult to injury, they then wanted $15 bucks to send it back. Had I known end users could buy parts, I might have even been willing to pay to get it back (as an aside, something I've never had happen with a repair before).So do I recommend this device? Yes, with the warning that using it in any environment where it might get wet is inviting expensive failure. I would pay a few more dollars for this tool if they would add a few seals at critical points.

Reviewed by 17 customers

Displaying reviews 1-17

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(1 of 2 customers found this review helpful)

 
4.0

Great for small projects

By Emtbender

from Huntley, IL

About Me Professional

Pros

  • Easy To Use
  • Powerful
  • Small And Light

Cons

  • High Vibration

Best Uses

  • In The Field
  • Small Projects

Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

As an Electrician, I bring this little guy in for service call work or the instances when I need just a few cuts. It offers terrific capability in a super small package. If you've got to cut some drywall, make a few cuts in studs or flooring, or you just need a super small tool then this is your go to recip saw. For major remodels I go to my 18V Fuel saws all.

My only critisisms after a year of continual use is the amount of vibration the saw produces while trying to cut conduit and the fact that the batteries are very hard to remove from the tool. I had another trades guy tell me he has the same problem. Overall I love the tool and originally thought it would be just a toy. Definately not a toy. Based on my like for this tool I plan to upgrade to the Fuel version. Nice job Milwaukee.

 
1.0

Don't waste your money.

By Shermbo

from Michigan

About Me Avid Do-It-Yourselfer

Pros

  • Easy To Use

Cons

  • Poor Design
  • Underpowered

Best Uses

    Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

    Use the saw a total of about three hours before motor started cutting in and out and finally it quit all together..thought about getting it repaired until I read the comments about the same problem I had. Decided not to wast the money. I also have the inspection camera that allow me the uses before it quit. Bought another brand and have had no problems. I have most of the other twelve vot Milwaukee tools and have had no problems with them and they get used a lot.

    (8 of 10 customers found this review helpful)

     
    1.0

    Very handy tool but terrible quality

    By Chief

    from Charlotte,NC

    About Me Professional

    Pros

    • Easy To Get In Tight Spot
    • Easy to use
    • Lightweight Easily Toted
    • Short Charge Time
    • Very Controllable

    Cons

    • Poor quality
    • Too Many Repairs

    Best Uses

    • Building Maintenance
    • Remodeling
    • Residential Construction

    Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

    I carry this tool in my toolbag at all times,it's very useful for cutting pipe and in places a big saw won't go,I love how easy it is to control for detailed work in tight places.it has been sent back 3 times to be repaired for the same problem within 1 yr of owning it.

    (3 of 3 customers found this review helpful)

     
    1.0

    Not durable

    By Dennis

    from Minneapolis, Mn

    About Me Avid Do-It-Yourselfer

    Pros

    • Easy To Use

    Cons

    • Not Good For Moderate Use

    Best Uses

      Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

      Motor burns up very easily under just moderate use. Runs but then quits working under load. This has happened twice in 4 years. Very disappointed in this Milwaukee tool. Did not expect Black & Decker performance and quality from a Milwaukee tool. Have the other M12 tools and never a problem, love them. Save your money on the Hacksaw - its not a good quality tool

      (4 of 4 customers found this review helpful)

       
      4.0

      Versatile and Handy

      By Karou the Homeowner

      from Highland Lakes, NJ

      About Me Casual Do-It-Yourselfer

      Pros

      • Durable
      • Easy to use
      • Handy
      • Short Charge Time
      • Versatile

      Cons

      • Could Use More Cooling

      Best Uses

      • Automobile Modification
      • Building Maintenance
      • Disassembly
      • Industrial Construction
      • Machinery Maintenance
      • Manufacturing
      • Remodeling
      • Residential Construction

      Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

      Very well balanced, easy to use in both directions, can go through most materials in an appropriate amount of time. Could use a slightly larger cooling area, and the possibility of a more powerful motor would do wonders for harder projects that a normal SawZall would not fit into.

      (3 of 3 customers found this review helpful)

       
      5.0

      Big things come in small packages!!!

      By Tony

      from Tuscaloosa, Alabama

      About Me Professional

      Pros

      • Durable
      • Easy to use
      • High Power Output
      • Short Charge Time
      • Versatile

      Cons

        Best Uses

        • Building Maintenance
        • Industrial Construction
        • Remodeling
        • Residential Construction

        Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

        Did an awesomeob cutting 1/2" - 1" EMT on a stadium A/V expansion I worked on, needed a saw in tight spaces and the Hackzall delivered!!! Definitely reccomend!!!

        (2 of 2 customers found this review helpful)

         
        5.0

        Cut above the rest!

        By South Paw

        from Chicago

        About Me Avid Do-It-Yourselfer

        Verified Reviewer

        Pros

        • Easy To Use
        • Fast Cutting Speed
        • Good Design
        • Great Blade
        • Long Run Time
        • Powerful

        Cons

          Best Uses

          • Home Improvement
          • In The Field

          Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

          I use this for trimming limbs and all my household rough cuts. It does a great job because it is so small and light, yet powerful.

          (8 of 8 customers found this review helpful)

           
          5.0

          Great tool

          By Longbox55

          from Danville IL

          About Me Professional

          Pros

          • Easy To Use
          • Fast Cutting Speed
          • Good Design
          • Great Blade
          • Powerful
          • Safe

          Cons

            Best Uses

            • Home Improvement
            • In The Field
            • In The Workshop

            Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

            I'm a mechanic by trade, and needed a compact reciprocating saw that could get in tight places a regular Sawzall or air powered die grinder with a cutoff wheel couldn't get to and a torch would be unsafe. The Hackzall was the answer. Cut right through hardened grade 8 bolts very quickly on suspension components. I've even worked it much harder than one would think this tool could handle, cutting up steel racking and 55 gallon drums.
            I would definitly suggest a spare battery for jobs that require long run times.

            (5 of 8 customers found this review helpful)

             
            1.0

            Junk

            By BT

            from Salem, Oregon

            About Me Professional

            Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

            The recip saw would be perfect if the motor did not burn up. Sent in the saw for repairs, and it cost almost as much as a new complete kit with case and battery's. The repaired saw has already burnt up within 4 weeks of being rebuilt. If you dont need to use it as a recip saw its great. You might be able to use it as a hammer. the 1/4' impact driver, angle drill, multi tool, 3/8" drill, 1/4" screw gun, Radio, Jig saw and 3/8" driver are good tools to buy. Dont buy the jacket either, it wont last long.

            (10 of 10 customers found this review helpful)

             
            3.0

            decent, but don't expect a Sawzall

            By Mr. Handyman

            from Ithaca, NY

            About Me Avid Do-It-Yourselfer

            Pros

            • Built-in work illuminator
            • Decently powerful
            • Easy To Use
            • Fast Cutting Speed
            • Good Design
            • Light Weight
            • Safe

            Cons

            • Blade Wears Out Fast
            • Poor Design
            • Somewhat underpowered

            Best Uses

            • Home Improvement
            • In The Field
            • In The Workshop

            Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

            A great little power saw to grab for cutting modest size things, and for work where getting to the A.C. is inconvenient or impossible. It's light weight means you can operate it with one hand, which is nice in an awkward spot.Being a 12v device, like I said in the title, it's not going to replace your Sawzall. You will want to purchase the high capacity 12v battery to use with this, as it can suck a standard battery empty fairly quickly.My biggest gripe with this tool is that I got a very small amount of water in it (a little tap water ran out of an empty pipe I was cutting, and some ran down the blade into the tool) and it immediately seized up. This was not covered under warranty by Milwaukee; they simply offered to replace it for [$]. You mean the price of a new tool? No thanks. Just to add insult to injury, they then wanted $15 bucks to send it back. Had I known end users could buy parts, I might have even been willing to pay to get it back (as an aside, something I've never had happen with a repair before).So do I recommend this device? Yes, with the warning that using it in any environment where it might get wet is inviting expensive failure. I would pay a few more dollars for this tool if they would add a few seals at critical points.

            (4 of 4 customers found this review helpful)

             
            4.0

            Nice compact design for Compact jobs

            By RM

            from SF Peninsula, CA

            About Me Avid Do-It-Yourselfer

            Pros

            • Easy To Use
            • Fast Cutting Speed
            • Good Design

            Cons

            • M12 batterysmall jobs

            Best Uses

            • Home Improvement
            • In The Field
            • In The Workshop

            Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

            This tool is ideal for small jobs around the home as well as an emergency disaster tool.

            The M12 batter life is ideal for small jobs but I would recommend the slightly larger M18 if you're planning on cutting lots of 'metal'.

            (4 of 4 customers found this review helpful)

             
            4.0

            Small but efficient

            By Chris

            from Montreal, Canada

            About Me Professional

            Pros

            • Durable
            • Easy to use
            • High Power Output
            • Short Charge Time
            • Versatile

            Cons

              Best Uses

                Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

                I like that tool because only one hand is required to use it. For small jobs or if you need to hold something with your other hand at the same time, it is very convenient. I do like the m12 products (m18 as well). The only thing that i don't like so much is the tool "behaviour" while i'm trying to cut something; the blade often stick to the target and then shake rather than cutting the piece unless I apply a lot of pressure on the tool. Other than that, everything is perfect.

                (2 of 5 customers found this review helpful)

                 
                4.0

                awsome

                By need a tool yea i got it

                from norwich ct

                About Me Avid Do-It-Yourselfer

                Pros

                • Powerful

                Cons

                  Best Uses

                  • Home Improvement

                  Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

                  I purchased this baby because holding my dads big sawzall over my head for a long time while cutting sucked but, now this on is lighter and more mobile and my dad now wants one for himself cause i'm tired of lending him mine for the same thing too bad get your own dad!!

                  (3 of 4 customers found this review helpful)

                   
                  5.0

                  For the Pool and Hot tub Pro!

                  By HonorableMaster

                  from Boise ID.

                  About Me Professional

                  Pros

                  • Better with XC battery
                  • Durable
                  • Easy to use
                  • High Power Output
                  • Short Charge Time
                  • Versatile

                  Cons

                  • Stock batteries are junk

                  Best Uses

                  • Building Maintenance
                  • Remodeling
                  • Residential Construction
                  • Tight spaces Plumbing

                  Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

                  Working on Pool and hot tub equipment has become eaiser that ever when I switched to the XC battery! Before that it was better as a door stop. Was able to replumb a pool system (Cutting 1.5" plumbing) and then cut a 30" sand filter in half before the XC battery was tired!
                  You got my business! Thank you!
                  Chaz C. Hanna

                  (3 of 3 customers found this review helpful)

                   
                  5.0

                  Compact and powerful

                  By Mark

                  from Edmonton, Alberta, Canada.

                  About Me Avid Do-It-Yourselfer

                  Pros

                  • Easy to use
                  • High Power Output
                  • Short Charge Time
                  • Versatile

                  Cons

                    Best Uses

                    • Remodeling

                    Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

                    This saw got a workout during my main-floor bathroom renovation, where it simply excelled. The compact design is great, it has plenty of power and the LED was handy when working in wall cavities and under the old tub.

                    (3 of 4 customers found this review helpful)

                     
                    5.0

                    M12 Corless Hackzall, Lithium-Ion.

                    By Notouchnohurt!

                    from Delta Jct, AK

                    About Me Professional

                    Pros

                    • Easy To Use
                    • Fast Cutting Speed
                    • Good Design
                    • Great Blade
                    • Long Run Time
                    • Powerful
                    • Safe

                    Cons

                      Best Uses

                      • Home Improvement
                      • In The Field
                      • In The Workshop

                      Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

                      Nice little hackzall for working in remote areas, and attic or crawl spaces, excellent for plumber o electrical work, and any other uses like tree trimming, or any other stuff that need to be cut, without bundle of extension cords, and LED lights just what every tool need when working in low lighted area or no light at all, I use then as a flashlight and tool, lightweight, compact design, speed, and quality, all in one, and I will definitely recommend this to anyone who need to enjoy working with tools.

                      (1 of 2 customers found this review helpful)

                       
                      4.0

                      Awesome light weight hack saw

                      By redgums

                      from daytona beach, fl

                      About Me Avid Do-It-Yourselfer

                      Pros

                      • Easy To Use
                      • Fast Cutting Speed
                      • Good Design
                      • Long Run Time
                      • Powerful

                      Cons

                        Best Uses

                          Comments about Milwaukee® M12 Cordless Hackzall One Battery Kit (2420-21):

                          Small light weight. Uses same battery as my drill, impact driver and hammer drill.

                          Displaying reviews 1-17

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