Highest drill speed thanks to reduction in friction and improved impact transmission thanks to the special cutting geometry on the chisel-shaped drill head., Stable and durable centering point for high-precision spot-drilling, Power breakers cause micro tears in the material for a noticeable quicker drill progress, The probability of snagging on concrete reinforcements is significantly reduced thanks to enlarged armouring phases., The 2-spiral helix with its helical geometry with reinforced core ensures quick delivery of bore dust and maximum breakage resistance, For use in concrete, masonry, natural stone, granite, in roll-up case, each 2 x: Ø 6 x 160; Ø 8 x 160; je 1 x: Ø 8 x 210; Ø 10 x 160; Ø 10 x 210; Ø 12 x 210 mm; 1 x pointed chisel (l: 200 mm); 1 x flat chisel (20 x 200 mm); ink. 1 x multi-tool