DEWALT Brad Point Drill bits are manufactured from chrome vanadium alloyed steel. A centre location point and outer cutting spurs ensure clean accurate holes. Suitable for drilling hardboard, plywood, chipboard and all natural hard and softwood. For diameters 11mm and above, the shank is reduced to 9.5mm. The DEWALT 5 Piece Brad Point Drill Bit Set contains the following sizes 4 x 80mm, 5 x 90mm, 6 x 100mm, 8 x 120mm and 10 x 133mm