VEVOR 6PCS Diamond Holesaw Set 20/25/40/45/50/68mm Hole Saw Set, M14 Thread Portable Stoneware Point-Accurate Cutter Drill Bits Core Ceramic for Tiles Granite

【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 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.