Prime-Line Security Fluted Satin Nickel Entry Knobs 1-3/4 in.

These vintage style door knobs are constructed of clear fluted glass and come fastened to a satin nickel finished steel base. This set of knobs is designed for indoor use only and it includes a 17/64 inch x 3-1/2 inch steel spindle with 3/8 inch -20 threads. This classic style knob set fits square drive spindle systems commonly found in antique and vintage door hardware sets and it can adjust to accommodate different door thicknesses. The steel base on these knobs include the set screws for fastening the knobs to the square spindle.