6 PCS Diamond Hole Saw Set M14 Thread & 1.4 mm Thickness & Fast Chip Removal This brand-new professional diamond drill bits set, with diameters of 22/35/40/50/65 mm (0.87/1.4/1.6/2/2.5 inch) and M14 thread, offers quick, simple, and clean cut. No need for water leaves your workplace clean. Sturdy & Durable Materials Ease of Installation High Performance Fine Portable Case Features & Details Sturdy & Durable Materials: The cutting blade of the diamond hole saw is made from a premium grade of diamond that delivers more effective performance than traditional carbide, or bi-metal hole saw. Ease of Installation: The diamond drill bits for ceramic should be connected to an angle grinder. Drill a pilot hole to begin your drilling to keep the saw from wandering from the desired hole location. High Performance: The ceramic drill bits for pots feature holes on the body to ensure that filings can be removed effectively while the blades are rotating at high speed. Fine Portable Case: The 6 pcs