*KeyFeatures *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 5 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. *Note: You might wear gloves and a mask when using the machine. And you could remove dust particles with a cleaner at the same time. ******************************************************************************************************* *Specifications Drill Bits Diameter: 25/40/45/50/68 mm (1/1.6/1.8/2/2.7 in) Carborundum Height: 15 mm (0.59 in) Total Length of Each Drilling Bit: 60 mm (2.3 in) Mounting Thread: M14 Gross Weight: 3 lb (1.36 kg) Package Dimensions (LxWxH): 7.9"x6.7"x4.3" (20x17x11 cm) ******************************************************************************************************* *Pakcage Content 1 x Tool Box 5 x Diamond Drill Bit