PROMEGA EVOLUTION - BLACK GROUND DRILL BIT
Promega Evolution HSS-G metal drills are high-quality, fully ground twist drills according to DIN 338 type N, made from black-ground HSS-G with a hardened black oxide finish. From 3 mm onwards, they feature a 135° split point for good centering and precise starting of the drilling process. The drills have a cylindrical shank and standard length and are available in packs of 5 or 10 pieces, depending on the diameter. Also available in practical sets from 1–10 mm (19 pieces) and 1–13 mm (25 pieces).