Features: 1) High performance mechanism 2) Oil bath lubrication, compact design 3) Built-in adjustable speed regulator 4) Auxiliary handle for greater control 5) The extended anvil reaches into deep truck wheels easily 6) Perfect for the demanding world of truck tire service 7) With 2 impact sockets: 38mm, 41mm 8) Square drive: 1 " 9) Capacity bolt size: 1 - 7/8", 48mm 10) Free speed: 4, 000rpm 11) Max. Torque: 1, 800ft/lb (250kg-m) 12) Air inlet (PT): 1/2", bsp (npt) 13) Air hose (ID): 3/4" 14) Average air consumption: 40cfm, 1. 13cub. M. /min 15) Suggested air compressor: 5. 0HP Outer packing: 2kits/ctn Carton dimensions: 56 x 29 x 33cm