Bosch 2608831160 - 4 mm SDS Plus 3 Hammer Drill Bit offers high durability while drilling concrete. It has four flute dura design that provides effective dust removal for improved endurance. SDS Plus 3 Hammer Drill Bit is made up of high alloy steel with optimized hardening technology. Thus, it can withstand wear. It has intended cutting edges that are made from an ideal Bosch controlled carbide blend that provides additional resistance. Bosch Hammer drill bit is compatible with all types of rotary hammers having SDS plus holders.