Connecting piece between preceding tool and following tool has polygonal receiving aperture with polygonal drive coupling at opposite end

摘要

The connecting piece (1) is between a preceding tool (2) and a following tool (4). The connecting piece has a receiving aperture (7) in the form of a polygon, corresponding to the journal (3) of the preceding tool. There is a polygonal drive coupling (6) on the opposite end, corresponding to a recess (5) for the following took. A locking pin (8) prevents the following tool falling out.