The innovative four cutter geometry with the high centering prevent uncontrolled drifting of the drill bit with maximum drilling performance through optimal distribution of the drill forces the ideal set for breakthrough drilling in order to lay cables and or pipes afterwards the set consists of 3 drills with high quality 4 carbide cutting tip in the following dimensions 16 x 260 mm 16 x 450 mm 16 x 600 mm each drill is packaged in a sturdy plastic sleeve 4 cutting carbide tips for