"FW-6PH series are 3/8"" and 1/2"" impact wrenches designed with double hammer clutch mechanism with metal housing and motor for high durability. Working torque range is recommended from 24 to 45 Nm for 3/8"" SQ tools and 29 to 47Nm for 1/2"" SQ tools, provide high productivity in tightening fasteners. Th FW-6PH series consists of 2 type of anvils - flat button retainer and pin-hole retainer. The range also provide PT and NPT inlet for all markets."