Ingersoll Rand 118MAXK Long Barrel Air Hammer Kit Maximum comfort; anti-vibration feature reduces tool vibration by over 30 percentage when compared to standard air hammers in it class Maximum power: 15 percentage increase in impact force over standard air hammer product offering Maximum productivity: quick change retainer allows for faster chisel changeovers, so you can get the job done Kit includes: air hammer, quick change retainer, 5 piece chisel set, carrying case