Features 75MM OPENING The diamond hole saw drill bit has an opening specification of 75mm and standard size, which ensures stable and accurate drilling. Diamond coating: the hole saw drill bit adopts diamond coating, which ensures a sharp cutting edge and greatly improves drilling efficiency. NICKEL PLATED The diamond hole saw features a nickel plated surface, which has good corrosion and oxidation resistance, thus extending its service life. Applicable material: this hole opener is suitable for drilling fiberglass, ceramic, ceramic tiles, limestone, slate, marble and light stone, etc. Chip removal hole: diamond hole saws with through holes facilitate the entry of cooling water and the removal of chips from the hole. Specification: Item Type:Hole Saw Bit Material: Diamond Specification: approx. 75 mm / 3 inches. Usage: Suitable for drilling glass, ceramic, tile, limestone, slate, marble, light stone, fiberglass, etc. Package list: 1 x hole saw bit, 1 x storage box Note: Not suitable for drilling in tempered glass, plastic and wood. Package List 1 x Hole Saw Bit 1 x Storage Box