The unique design of the SP Tools Extra Long Air Hammer Pneumatic Drifts, No. 11600, allows users to remove long bolts that have become frozen in place due to rust and time, including shock bolts and suspension arm bolts. These bolts are often too long for conventional pin punches or tapered drifts to push the bolt through a rusty bushing sleeve. This tool is operated by attaching to an air hammer and has a 5" long driver section. allowing easy removal of rusty bolts and long pins. This set comes in a three-piece storage bag, and includes the three most common sizes: 5/16" (8mm), 3/8" (10mm) and 1/2" (12mm).