Reisser Speedster SDS-Plus hammer drill bit designed to pulverise the substrate more efficiently and resist edge damage when rebar is encountered. When combined with the new narrow-shouldered, friction-reducing Vario KVS flute, the Reisser Speedster v-plus drills up to 12 percent faster than the previous generation Speedster, and up to 25 percent quicker than conventional SDS-Plus drills. Stringent quality controls are obeyed through every stage of manufacture guaranteeing a quality finished product. The PGM approval mark which guarantees conformity to manufacturing parameters set out by the German Institute of constructive engineering. The PGM mark is your guarantee of precisely drilled holes for a stable anchor fixing. Centering tip prevents skidding for easier spot drilling. Tapered Shoulders reduce friction and increase resistance to breakage. The unique reinforced geometry of the KVS-flute reduces vibration. The special surface finish reduces drill bit wear, improve resistance to bending forces. Enlarged rebar chamfers reduced the likelihood of the bit jamming. Measures 13.0 mm diameter by 450 mm length.