SDS Hammer drill, SDS shank twist drill Shank type: SDS Plus, SDS Max, Spline shank. SDS Hammer drill ,SDS shank drillShank type: SDS Plus, SDS Max, Spline shank. Features: 1 ... , concrete, stone, masonry, tiles and marble. 5. The electric hammer drill bits are machined from chrome steel or ally steel fitted with ... Sand blasted surface. Other industrial surface finish available. SDS Hammer twist drill