High-quality precision tool made of the finest hardened steel, Precision ground from one piece (not a bolted or welded 2-piece product)., Ideal for drills equipped with quick-change keyless chuck according to DIN 3126., Strict compliance with DIN 3126 E6.3 ensures that the chuck is not damaged., With centering point for precise spot-drilling., For use in hard and soft wood, plywood, chipboards etc., 5 pieces, with hexagonal shank (E 6,3), in plastic storage case, Ø 3 / 4 / 5 / 6 / 8 mm