CP7111 Pistol grip air hammer with a standard .401" round shank and an easy change retainer for quick accessory change. It has a hose size of 3/8 Inch / 10mm. Features: Operator comfort with ergonomic palm shape Productivity increased with low vibration level Powerful and ergonomic palm shape for vertical and horizontal applications 3/16 (5mm): great for surface preparation from body filler to paint primer Easy change retainer for quick accessory change Specification: Model: CP7111 Power (Joules): 7.2 joule Blows per minute: 3000 Cold rivet capacity: 1/4" 6.4 mm Cold rivet capacity (steel): 3/16" 4.8 mm Bore: 3/4" 19 mm Stroke: 2.63" 67 mm Chisel rivet set shank: 0.401" 10.2 mm Shank: Round Length: 6.7" 171 mm Average air consumption: 6.25 cfm 177 l/mn Actual air consumption: 25 cfm 708 l/mn Air inlet thread size: 0.25 " Min. hose size: 3/8" 10 mm Sound DBA pressure: 105 db(A) Sound Power: 111 db(A) Vibration (ISO-8662-14): 8.9 m/s Vibration (ISO-28927-9): 6.