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 ... , concrete, stone, masonry, tiles and marble. 5. The electric hammer drill bits are machined from chrome steel or ally steel fitted ... blasted surface. Other industrial surface finish available. SDS Hammer twist drill