Features 1、Hole Drilling: No watering required during drilling, and the hole also ensures neat and smooth cut edge without burrs. 2、Better Design: M14 thread design enables high torsion and bearing, not easy to slip, works with stability and safety. 3、Practical Use: Allows for application in cutting holes on marble, glass, ceramic tile, granite and so on, very useful. 4、8Pcs in Total: Has 8pcs hole drill bit with 20mm, 25mm, 32mm, 35mm, 40mm, 50mm, 60mm and 68mm diameter for your needs. 5、Good Material: Comes with even and thickened diamond coating, rustproof, and very durable with wearing and long using. Specification Item Type: Diamond Hole Saw Material: Diamond Colour: Green Aperture: Approx. 20mm / 0.79in, 25mm / 0.98in, 32mm / 1.26in, 35mm / 1.38in, 40mm / 1.57in, 50mm / 1.97in, 60mm / 2.36in, 68mm / 2.68in Sand Band Width: Approx. 15mm / 0.59in Total Length: Approx. 50mm / 1.97in Female Thread: M14 Scope of Application: For marble, glass, ceramic tile, granite and other stone openings. Package List 1 x 20mm Diamond Hole Saw 1 x 25mm Diamond Hole Saw 1 x 32mm Diamond Hole Saw 1 x 35mm Diamond Hole Saw 1 x 40mm Diamond Hole Saw 1 x 50mm Diamond Hole Saw 1 x 60mm Diamond Hole Saw 1 x 68mm Diamond Hole Saw 1 x Aluminium Box 1 x User Manual