This is SDS Max Hammer Drill Bit,
Features:
1) Diameter: 8.0 - 45 mm
2) Length/SDS shark: 280 - 1, 500mm
3) Material: 40Cr
4) Applicable to drill wall, concrete and bricks
5) It can be used with Bosch electric hammer drills. The shank is round with dual-arc and three-keyway can match with following brands: Bosch, AEG, Hilti, Makita, Skil, Hitachi, Toshiba
6) Flute: Both S2 and S4/ parabola, helix, or according to your requests
7) Tip: YG8C
8) packing: PVC bags, tube, plastic seal
9) Finish: Black oxide, zinc plated, nickel plated, chrome plated and sand blast