Particularly high drilling speed through optimized tip geometry with aggressive cutting edge profile and large carbide tip angle. - Patented (WITH PRINCIPLE) cutting edge design and strengthened carbide with double centering point guarantee extreme high durability. - Particularly comfortable and vibration reduced drilling owing to the innovative Twinmax3-D spiral design which provides optimal removal of drill dust. - Rounded cutting edges provide extreme robustness and low probability of breakage even during reinforcement impacts. - 3D Cutting Edge - Hammer Drilling - HST Hardened - Twin Max Flute - Low Vibration Size / 10x210