Monster's "lo" vibration 250mm air hammer with built-in QC chuck, No. MST7118, includes a Q/C chuck rubber boot and five 7" long chisels: claw ripper/panel cutter, tapered punch, spotweld breaker, single blade panel cutter and 3/4" flat chisel. Capable of 2,200 blows per minute (BPM), the hammer features a 1/4" air inlet, 90 psi air pressure, a patented valve design that reduces vibrations and lowers occupational injuries, an integrated quick-change chuck, and an one-year warranty on material and workmanship.