The SDS-Plus drills with 4 tungsten carbide cutters guarantee performance and durability up to 4 times higher than the same tips with 2 cutters. Suitable for drilling masonry, reinforced concrete, natural and artificial stone. Features: - 4-flute geometry for the maximum removal of drilling dust and debris - Centring tip for easy spot drilling with pinpoint accuracy - Enhanced rebar guards for improved resistance when hitting rebars - New flute design with thin flute at the tip for maximum debris extraction, higher speed and less friction.