Alloyed steel barrel and heat-treated piston. Built-in power regulator and trigger control. 1/4" NPTF air inlet. 3/8" minimum hose size. 7.63" tool length. 3/4" bore diameter. Includes blow-molded kit box and 6 assorted chisels: 3/4" flat blade chisel, punch chisel, claw ripper-edging tool, single blade cutter, kwik cutter, and vee chisel-spot welder breaker.