This wood drill bit set is made of , which can withstand use. Features the steel material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. This wood drill bit set will make woodworking easier and smoother. Features -Color:Assorted Color -Material:Steel -Size:30.00X1.20X1.20cm/11.79X0.47X0.47in Specification: 4mm/5mm/6mm/7mm/8mm/10mm/12mm - There are multiple drill diameters drill bits to meet your needs: 4mm, 5mm, 6mm, 7mm, 8mm, 10mm, 12mm. - Precise and unique triple-point design of the ground tip reduces slipping and moving. - Can be used in woodworking, hardwood, plywood, ABS, not suitable for drilling cement or porcelain. - workmanship, reasonable structure, professional and practical, can bring you convenience. - Special design and it is in fine craftsmanship. It is the best replacement for your old, broken one. 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