core kit cutting hard material,such as stone,granite..very good performance. Speed very fast,with chip out when working. Long core kitThis core kit model number DBSET01Comprising:5-pc Core drill: Φ52X150mm, Φ65X150mm, Φ117X150mm, Φ127X150mm, Φ38X150mm6 Accessories: Hex adaptor 90mm,Center drill Φ8X200mm,SDS-Plus adaptor 240mm, Hex adaptor 240mm, SDS-Plus adaptor 115mm,Drift keyPacking:With a ...