Composite Vibration Damped Long Stroke Air HammerThe AIRCAT 5200 A is a long stroke low vibration composite air hammer with a quick change chisel retainer. It produces 2100 blows per minute from a 3 7 8 in. piston stroke. Most importantly the 5200 A has a metal valve, not a plastic one like most of our competitors use. This adds reliability and durability. The patented ergonomic handle grip is composite which helps absorb the hammer kick for the ultimate in user comfort. We've reduced the vibration