68mm Diamond Hole Saw, Diamond Drill Bit with Center Guide, Tile Hole Saw with Diamond Surface Coating for Cutting Glass, Tile, Ceramic, Marble, Limestone

【PRECISE POSITIONING】: Compared to traditional glass hole saws, our hole saws are equipped with positioning aids. The pilot drill in the center can help with precise positioning, ensuring the drill does not slip or jam, and helping you drill precise holes.

【CUTTING EFFECT】: The diamond surface coating uses a sintering treatment method. The cutting edge contains diamond particles from the inside out to ensure the cutting edge is always sharp. Low cutting resistance and stable drilling create smooth, high-precision cuts without broken edges for optimal cutting results.

【HIGH-QUALITY MATERIAL】: The diamond hole saws are made of industrial-grade high-strength carbon steel and the surface is nickel-plated, effective against corrosion and rust. The diamond surface coating of the drill bit is thick and uniform, improving the wear resistance and durability of the hole opener.

【CHIP REMOVAL DESIGN】: The cutting head of our diamond drill bit features a notch design with side holes, which facilitates the inflow of cooling water and ensures that chips and other particles escape from the hole during operation, allowing the hole to be drilled. The process is more convenient and efficient.

【WIDE APPLICATION】: The diamond drill bit is suitable for cordless drills, lithium drills, and benchtop drills. Widely used for drilling precise holes in glass, ceramics, porcelain, tile, limestone, slate, marble, pumice, and fiberglass.