Features: 1) Hardened steel barrel and piston for less wear and longer life 2) Lightweight aluminum pistol-grip housing 3) Built-in power regulator and trigger control 4) A must for general cutting, chipping and scraping 5) 4 chisels included 6) Round chisel and Hex chisel optional 7) Front exhaust Specifications: 1) Chisel shank: 0.401 / 10.185mm 2) Bore diameter: 0.75 / 19.05mm 3) Blow/min.: 4,500rpm 4) Air inlet: 1/4 " 5) Air hose (ID): 3/8 " 6) Average air consumption: 5cfm (143L/min) 7) Suggested air compressor: 2.0HP Packing: 10pcs/ctn Carton dimensions: 28 x 20 x 32cm