Parmak Heavy Duty Tension Spring Silver

Heavy duty torsion springs are usually found in lift-gates, hatches or lids. They are able to exert large amounts of torque when a torque load is placed on the legs. Their function in a truck's lift gate, for example, is to assist the user to support the weight of the gate safely while pulling it down. They also assist the user in lifting the gate back to its original position with minimal human force.