【Professional Diamond Hole Opener】Made of selected high-strength carbon steel and with a diamond-coated drill bit, excellent cutting ability, rust-proof, strong torque and long service life. 【Center drill bit】Special design with a center drill bit for positioning function, which is convenient to guide the hole saw 【High-strength Hole Drilling】The diamond coating can increase the drilling speed and make the drill sharper. The cutting edge design makes the resistance smaller and more efficient, helping you to drill a smooth round hole accurately. Round chip hole on the side to keep the drill clean at all times. 【Dry Drilling】Dry drilling is ok for Ceramic, Porcelain, Tile, Glass, Granite Quartz, Marble, Gemstone 【Buy with Confidence】 We offer "TWO YEAR" waranty on hole saw. If you have any questions, please touch us. We will try our best to solve it for you.

VENSTPOW Brazed Diamond Hole Saw, Tile Hole Cutter with Center Drill Bit, Core Drill Diamond Drill Bits for Porcelain Tile, Ceramic, Glass, Granite Quartz, Marble, Gemstone, Dry Drilling 

This diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, ceramic or other materials.

Made of high-strength carbon steel, sturdy, with excellent anti-rust performance, can be used for a long time.

The cutting port design is matched with the round chip hole on the side to effectively increase the drilling speed and keep the drill bit clean.