"FW-6PXD series are 1/4"" Hex. impact drivers designed with double hammer clutch mechanism with metal housing and motor for high durability. Working torque range is recommended from 10 to 18 Nm, provide high productivity in tightening screws. The range also provide PT and NPT inlet for all markets. The FW-6PXD series consists of 2 type of spindles - short bit and long bit."