JET JSG-0204R 2-5/8-in 3,200 BPM Air Riveting Hammer Special heat-treated hardened steel barrel and piston for longer tool life Built-in tease trigger and air regulator for precise control Standard spring retainer for quick tool changes 4-Piece Chisel Set: 5-Inch Penning Tool, 5-Inch Nut Splitting Tool with a 3mm Opening, 5-Inch Flat Chisel and a 5-Inch single cut panel cutter