This set is part of our universal Quick Change System, meaning the bits will fit any quick change system. These brad point twist drills are made to a very high standard, giving exceptional clean cuts time after time. For strength they are ground in one piece; for clean, fast cuts the ground centre point has two cutting spurs that scribe a very clean entrance hole, followed by a specially ground flute which lands that cut cleanly. This keeps the drill bit straight and true, clearing waste quickly for a fast cut. DIN3126.E6.3 form hardened quick change shank. Perfect for use in cordless drills. Set includes 3, 4, 5, 6 and 8mm. Made in Austria.