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 enlarged holes on the body to ensure that filings can be moved effectively while the blades are rotating at high speed. Fine Portable Case: The 10 pcs diamond 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. Wide Application: The core extractor ensures a clean and accurate hole on hardest and abrasive materials like tile, granite, marble, other stone, and porcelain.