want a kind of professional drill bit for woodworking? want to save your time in removing debris during drilling? This can be your . Really practical and useful, just take it for your car. Features -Color:Assorted Color -Material:Steel -Size:30.00X1.20X1.20cm/11.79X0.47X0.47in Specification: 4mm/5mm/6mm/7mm/8mm/10mm/12mm - Three- positioning, three-point design cutting edge, accurate positioning of the central acute edges, not easy to deviate. - Spiral chip flutes, increase the amount of flying chips during high-speed operation to prevent plugging holes. - Made of high grade steel, universal chuck bench drill, no need to worry about fitting problems. - It is suitable for woodworking, but not for high strength surface operations such as porcelain drills and cement. - Every detail is carefully crafted, experience the high durability and practicality. Package list: 1 x 4mm bit 1 x 5mm bit 1 x 6mm bit 1 x 7mm bit 1 x 8mm bit 1 x 10mm bit 1 x 12mm bit