Antengdatool 2PCS 1/4 Inch Dry/Wet Diamond Hole Saw For Angle Grinder - 6mm Porcelain/Tile Core Drill Bits For Ceramic Marble Brick Granite Stones Attach Round Shank Adapter

We are committed to improving product quality and continuously launching new and improved products based on our customer needs. We always insist on being the tool brand you trust! THESE ARE SHARPER, FASTER DRILLING DIAMOND HOLE SAWS Currently, we offer the following serrated tile hole saw sizes: 3/4, 1, 1-1/4, 1-1/2, 1-3/4, 2, 2-1/2, 3, 3 1/2, 4 , 4-1/4, 4-1/2, 5 Serrated blade design for easy positioning Solid Steel Body. Two positioning drill bits for double security One diamond tipped pilot drill bit and one alloy tip pilot bit. Different guide drill bits are used for different surfaces. See here for instructions on how to use Start Drilling with Pilot Bit Until drilling an initial positioning mark Drilling an Initial Mark Continue drilling at a low speed (less than 500rpm), finish drilling 【Upgraded High Quality】Compared to standard diamond hole saws, our newly diamond bits features sharper serrated edges and coarser diamond grit. With an enhanced diamond coating, a more robust one-piece steel body, and advanced double-layer surface treatment, it ensures durability, aesthetics, and wear resistance. 【Innovative Serrated Design】Our tile hole saw's cutting edge is designed with serrated teeth for increased sharpness, facilitating smoother and more accurate cuts through porcelain,ceramic,granite marble and other stones. These bits ensure accurate drilling while preventing surface damage. 【Wet Use for Optimal Performance】: The electroplated diamond coating on this hole saw for tile demands continuous use of water or coolant during operation.