Features 75mm Opening: The Diamond Hole Saw Drill Bit Has A Opening Specification of 75mm, with Standard Size, Ensuring Stable And Accurate Drilling. Diamond Coating: The Hole Saw Drill Bit Adopts Diamond Coating, Ensuring A Incisive Cutting Edge And Greatly Improving Drilling Efficiency. Nickel Plating: The Diamond Hole Saw Has A Nickel Plated Finish, Which Has Good Corrosion And Oxidation Resistance, Extending Its Service Life. Applicable Material: This Hole Opener Is Suitable for Drilling Glass Fiber, Ceramics, Ceramic Tiles, Limestone, Slate, Marble, And Light Stone, Etc. Chip Removal Hole: Diamond Hole Saw With Clearance Holes Facilitate The Entry of Cooling Water And Facilitate The Discharge of Chip from The Hole. Specification: Item Type: Hole Saw Bit Material: Diamond Specification: Approx. 75mm / 3in Use: Suitable for drilling glass, ceramics, tiles, limestone, slate, marble, light stone, glass fiber, 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