Ideal for both professional and hobbyist use, this diamond drill grinding bit offers exceptional performance and versatility. Its robust construction and diamond coating make it suitable for a variety of materials, including metal, stone, and ceramics. The bit's design ensures smooth and efficient grinding, reducing the risk of damage to your workpieces. Features -Color:Golden -Material:Emery -Size:4.50X3.80X3.80cm/1.77X1.49X1.49in -Diameter:38mm -Quick chamfering: the brazed diamond chamfering tool allows for rapid chamfering of tiles and marble, improving your efficiency -Hole expansion feature: the tool's hole expansion feature makes it easy to enlarge holes in tiles and marble, enhancing its functionality -Versatile grinding and polishing: use this tool for angle grinding and polishing, providing a versatile solution for all your stone processing needs -Precision drill bits: the highprecision drill bits and grinding heads ensure accurate and chamfering and processing -Suitable for various settings: for , construction sites, and professional stone processing applications Package list: 1 x drill bit