TOOL

摘要

A portable powered tool (1) comprising a bit that is rotatably driven by a motor (4), wherein the bit is connected to a gear (5) that is arranged such that it may be engaged with a geared drive (7) to provide drive to the bit from the motor (4), and may be disengaged from the geared drive (7) to allow for free rotation of the bit, wherein the gear (5) comprises a worm wheel (5) and the geared drive (7) comprises a worm gear (7).