Carbide tipped for increased efficiency SDS-PLUS drill bit (2 cutter) which ensures high speed drilling Comes with Euro hook clip There are three tips on TCT blade asymmetrically; The tips hit concrete while hammer drilling; It makes micro cracks in the concrete, which results in breaking the concrete and allows for drilling with high efficiency To achieve high efficiency, chamfered side of TCT blade decreases the friction while drilling; Compared with current 4 Plus item, chamfering area is bigger by 35%; Also, it helps not breaking TCT blade when hitting hard material e.g. gravel in concrete or reinforcement material For use with models that accept SDS-PLUS shank bits For users who mainly drill into concrete, not reinforced concrete and those who consider speed seriously