4-Cutter Head - The SDS max-4 Drill Bit is equipped with a 4-cutter head and delivers long lifetime in concrete. This special 4-cutter design ensures prolonged use with no jamming when drilling rebar. Additionally, its 2-flute U-shape also lenghthens life while offering good dust removal. Durability is further secured via the bit's highly durable carbide makeup, which resists wear as it drills. The bit is intended for use in concrete and masonry. It is compatible with all rotary hammers with SDS max holders. Fits all SDS max rotary hammer drills. Features and Benefits • 4-Cutter Head for Concrete • SDS max-4 Drill Bit is equipped with a 4-cutter head and delivers long lifetime in concrete • 4-cutter design ensures prolonged use with no jamming when drilling rebar Specifications Diameter (D): 18,00mm Working length (L1): 400mm Total length (L2): 540mm