SDS-MAX ZENTRO DRILL BITS - Adapted for SDS-MAX Hammers Power – Specially developed robust head geometry ensures that even toughest applications can be mastered. Carbide Tip – The optimal 4×90° carbide cutting edge symmetry prevents seizing up on hitting reinforcing steel. Fast Drilling – Large, robust secondary cutters with dynamically curved cutting tips actively support the main carbide tip during fast drilling. BIT DIA (MM) / 24 OVERALL LENGTH (MM) / 520 WORKING LENGTH (MM) / 400 PER PKG / 1