US Patent 7162802 Hand tool

A hand tool is formed of a handle and a removable tool part . The tool has a protruding section and a first magnet at the end of the protruding section. The handle has a bore with a second magnet. The tool is assembled by inserting the protruding section into the bore so that the first magnet contacts the second magnet. Ramps are provided on the tool part and handle; the tool is disassemble by rotating the tool part relative to the handle. Thanks to the ramps, the magnets are separated : the tool part and the handle may then be pulled apart.