Description:- For grinding, polishing and deburring robust and light housing ergonomically designed for easy one-handed operation low vibration Speed infinitely adjustable with safety trigger Non-slip cold- insulated handle Collet 6 mm Air-inlet thread 1/4” Operating pressure 6,3 bar Max. free-running speed 22000 rpm. Max. sound level 72 dB(A)Lp A Average air consumption 270 l/min. recommended hose inner- 8 mm including brass nipple