For use with Corded or Cordless Drills (max.) 750 – 1250 U/min. Perfect holes. Drills dry, no coolant required. Self-centering, no more scratched tiles. 10 – 20 Holes ca. 45 Sec. per Hole. Pinpoint accuracy – no drill guide needed. Asymmetric cutting tip technology with inbuild oscillation. Available diameters of the drill: 5,6,7 & 8mm.