... tip, Standard four flute design. SDS plus and SDS max hammer drill bits.Shank type: SDS Plus, SDS Max, Spline shank. Features ... granite, concrete, stone, masonry, tiles and marble. 5. The electric hammer drill bits are machined from chrome steel or ally steel fitted ... . Sand blasted surface. Other industrial surface finish available. Sds plus drill & sds max hammer drill carbide tipped