Feature:1. Wide Application: The hole saw ensures a and accurate hole on hardest and abrasive materials like tile, granite, marble, glass, and other stone.2. Fine Portable Case: The 6pcs drill bits come with a compact box where the bits are not in use. You don't have to worry about the missing of any of them.3. Sturdy and Durable Materials: The cutting blade of the hole saw is made from a premium grade of that delivers more effective performance than traditional carbide, or bi metal hole saw.4. M14 Brazed Angle Grinder Hole Opener: M14 screw design, the shank prevents slipping, has large torsion, high bearing capacity, and is very easy to drill.5. High Performance: Thickened emery coating, uniform coating, improve wear resistance and life of hole opener, open hole is neat, smooth, no broken edges, no need to add water, incisive, can drill deep holes stably.How to Use:1. Fasten firmly and correctly on the angle grinder. Turn on the angle grinder and let the bit spin in the air to check for balance issues.2. Place the drill bit at an angle of 15‑45 degrees and drill down gently at an oblique angle.3. When drilling about a semicircle, gradually raise the drill bit to the upright position, continue drilling and shake the machine slightly.Specification:Item Type: Hole SawMaterial: DiamondColor: BlackProduct Ho