Bosch Professional 7-Piece CYL-3 Concrete Drill Bit Set (for Concrete, � 4-10 mm, Accessories for Impact Drills). Included Components: ‎1 x CYL-3 concrete drill bit - 4 x 40 x 75 mm / 1 x CYL-3 concrete drill bit - 5 x 50 x 85 mm / 2 x CYL-3 concrete drill bit - 6 x 60 x 100 mm / 1 x CYL-3 concrete drill bit - 7 x 60 x 100 mm / 1 x CYL-3 concrete drill bit - 8 x 80 x 120 mm / 1 x CYL-3 concrete drill bit - 10 x 80 x 120 mm.