Dremel Screw-In Mandrel - 401

Used primarily with polishing bits and accessories including the 414, 422 and 429 Dremel accessories. Simply screw a polishing wheel or tip onto the mandrel's threaded head. For use with 414, 422 and 429 Dremel accessories. For best results, insert the accessory bit all the way into the tool and then back it out slightly before tightening down. This provides plenty of shank for the collet or chuck to hold onto the bit.