Features: The NEW Impact Control HSS Drill Bit Accessories from BOSCH: - Highly robust drilling in metal, especially with impact drivers - Very strong body provides extreme robustness - Precision-ground from solid metal with an oxide coated flute for slicing through materials with reduced Wear - Active cutting and perfect centering due to pointed split point tip. 1/4-inch hex shank for universal use - Manufactured to DIN 338, drill bit Type N (flute angle) with tip of 135 degrees Contents: 1x Genuine BOSCH Loose Piece without package. Hex shank end Diameter: 1/4 inch Choose from drop down list of various diameters: 2mm 2.5mm 3mm3.5mm4mm5mm6mm7mm8mm 9mm10mm.