The FEIN 33901680400 Fabricator M12 Tapping Set is a comprehensive threading accessory set for producing M8, M10 and M12 threads in both through and blind holes. Designed for metal fabrication and machine construction, it includes HSS machine taps, safety-clutch tapping collets, matching HSS twist drills and a 90° countersink bit, all supplied in an L-BOXX 136 for organised storage and transport.