Are you in search of professional drill bit? Or are you looking for sturdy, trustworthy drilling bit that can do multiple jobs at once? , ! Our durable drill bits must meet your demands. Using cemented carbide materials with high hardness, can help you do many drilling work, it is one of the for you. Features - Material: cemented carbide. - Size: 8.00X0.70X0.60cm/ 3.14X0.28X0.24inch. - Specification: 3/4/5/6/8/10/12mm. - Adopted of cemented carbide materials, they are wear-resistant and reliable, safe and durable. - They are light weight and can offer quicker and more accurate drilling to improve your efficiency. - Applied for tiles, brick walls, concrete, glass, ceramics, wood, aluminum alloy, and other materials. - workmanship, corrosion resistance, not easy to rust, no burrs for hand protection. - Proper size, feeling smooth in the touching surface, bring you much more convenience. Package list: 7 x drill bits