Multiplex drills/spade drills Particularly for large dimensions, we recommend Multiplex drills. The drill series is available in HM, HSS-E or HSSPM. With replaceable drill bit up to 102 mm. Toolholders: Standard lengths 3, 5 and 7xD. Other lengths are available on request. Spade Drills Spade Step Drills Inserts for spade drills