Hordion 1 Pcs 115mm / 4 1/2 Inch Diamond Drill Bit Tile Hole Saw Kit, Masonry Hole Saw Kit Marble Drill Bit，Glass Cutting Drill Bit for Tile, Masonry, Glass, Marble - ZC202308142340

• Package Includes:1 pcs small glass drill, diameter: 115mm (4 1/2 Inch), length 55mm (2.16 inch), cutting depth is 30mm (1.29 Inch), can meet your daily needs High Quality: Diamond hole saws are made of industrial grade carbon steel with a diamond coating to increase the sharpness of the drill bit and nickel plating to extend the life of the saw and increase surface corrosion resistance. Wide Applications: Diamond coated bits are perfect for drilling glass, ceramics, light stone, limestone, granite, tile, slate, marble, and fiberglass. Note: Water is required to cool the drill when in use, which will greatly extend the life of the drill. When drilling, first tilt the drill at 45 degrees and wait until a crescent-shaped groove appears, then drill perpendicular to the material. Clever Design: With large clearance holes next to the drill bit, these glass hole saws along the drill bit allow for easy access to cooling water and drainage of chips and other particles during drilling. Makes the drilling process easier.