The AIRCAT Super Duty 0.498" Shank Air Hammer, No. 5300-B-T, has a 0.498" shank opening with a 2-11/16" piston stroke. Its heavy duty Quick Change Chisel Retainer prevents chisels by-passing conventional spring retainers. The patented AIRCAT grip has been ergonomically designed to provide ideal comfort. The tool is designed for ultra heavy duty, and for driving out shackle pins and kingpins; and cutting large bolts, nuts and fasteners.