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, comprising each 1 hammer drill bit Ø 6x160 mm, 8x160 mm, 10x160 mm, 1 pointed chisel 250 mm and 1 flat chisel 250x 20 mm