Features Adapted for SDS-MAX Hammers Power. Specially developed robust head geometry ensures that even the toughest applications can be mastered. Carbide Tip. The optimal 4×90° carbide cutting edge symmetry prevents seizing up on hitting reinforcing steel. Large, robust secondary cutters with dynamically curved cutting tips actively support the main carbide tip during fast drilling. The drilling debris is transported fast in the large-volume flute geometry. The centering point with a 130° point angle ensures highly accurate, precise drilling and guarantees optimal drill guidance. The individual wear marking is an indicator for evaluating the dimensional stability of the anchor holes. The reinforced-core flute achieves the optimum between volume and break resistance. Vibrations are dampened and resulting in more impact energy on the carbide tip. The SDS max-4 Drill Bit is equipped with a 4-cutter head and delivers a long lifetime in concrete. BIT DIA (MM) / 28 OVERALL LENGTH (MM) / 570 WORKING LENGTH (MM) / 450 PER PKG / 1