Specification Recommended Air Pressure 6.5Kg/Cm2 (90 Psi) Model: Rp-27412 Free Speed : 160Rpm Grinder Cap : 1/2″ Air Intel : 1/4″ Air Hose : 1/2″Id Net Weight : 1.23Kg Sug. Air. Comp : 2Hp Working Pressure : 0.63Mpa Working Torque : 50Ft-Ib Avg. Air Consumption : 4Cfm (114 L/Min)