Item Type: Brazed Diamond Drill Bit_x000D_Material: Diamond_x000D_Color: Green_x000D_Hole Diameter: Approx. 20mm / 0.79in_x000D_35mm / 1.38in_x000D_38mm / 1.5in_x000D_43mm / 1.69in_x000D_50mm / 1.97in_x000D_60mm / 2.36in_x000D_Sand Width: Approx. 15mm / 0.59in_x000D_Working Length: Approx. 40mm / 1.57in_x000D_Overall Length: Approx. 60mm / 2.36in_x000D_Internal Thread: M14_x000D_Scope of Application: Marble, glass, ceramic tile, granite and other stone openings 1NEAT AND WEAR RESISTANT: Drill bit bring neat and smooth opening, no broken edges, no need to add water, of sharpness and wear resistant 2FOR VARIOUS MATERIALS: M14 brazed mouth angle grinder is made of fine natural diamond powder, suitable for marble, glass, tile 3LARGE TORSION SCREW: M14 screw design, handle can prevent slipping, possess large torsion, high bearing capacity. Using aluminum box for preservation, rust proof and corrosion resistant, possess smooth and high end appearance 4IMPROVE SERVICE LIFE: Thicken emery coating, the coating is uniform, the wear resistance and the life of hole opener are improved, which means that this products are of higher quality and can drill deep holes stably 5ROBUST AND DURABLE MATERIAL: The cutting blade of the diamond hole saw is made of good quality diamond for more efficient performance than conventional carbide or bimetal hole saws 6 x Vacuum Brazed Diamond Bit 1 x Aluminum Box 1 x User Manual