Ingersoll Rand 123MAX Air Hammer: 0.401 in Shank Size, 2 5/8 in Stroke Lg, 3,530 BPM

Air hammers use bits with 0.401" or 0.498" round shanks to handle most material removal and light chipping tasks. Sometimes called zip guns or chiseling hammers, they are generally lighter and more compact but less powerful than chipping hammers. They are commonly used to remove scale and slag, deburr surfaces, and clean castings. Their pistol-grip design sets the barrel at a right angle to the grip, so users can control the pressure applied to the bit and hold the tool steady in a range of positions on vertical and horizontal surfaces. They have a trigger switch to activate the tool.