M6 - M30 Tap Collet Chuck Morse Taper Shank Variations Size & Prices Here is a variety of tap collets. This listing is for one collet ( Does not contain taps ). Sold individually, you are select. Just go to the size window above to select the size you need from the drop down menu. Tap size M6/M8 with 6.3mm shank and 5mm drive square. Tap size M10 with 8mm shank and 6.3mm drive square. Tap size M12 with 9mm shank and 7.1mm drive square. Tap size M14 with 11.2mm shank and 9mm drive square. Tap size M16 with 12.5mm shank and 10mm drive square. Tap size M18/20 with 14mm shank and 11.2mm drive square. Tap size M22 with 16mm shank and 12.5mm drive square. Tap size M24 with 18mm shank and 14mm drive square. Tap size M27/M30 with 20mm shank and 16mm drive square. _x000D_