1 Inch Diamond Hole-Saw Bits with Pilot Drill Bit - 2pc 1" Diamond Tipped Tile Hole Saws with Guiding Bit Accurate Drilling for Porcelain Tile Ceramic Pottery Granite Stone Glass Bottles 25mm

Premium Diamond Hole Saw Bits: This set includes two high-quality 1" diamond-tipped hole saws along with centrally placed guiding pilot drill bits for accurate drilling on a variety of hard surfaces. Excellent for creating smooth, clean holes in materials such as ceramic, pottery, porcelain tile, granite, stone, glass bottles, concrete countertops, and brickwork. The wet/dry diamond core design, combined with water cooling, greatly enhances performance. Suitable for both professional contractors and DIY enthusiasts. The efficient design features a 3/8" triangle shank for improved chuck grip, a 3/8" diamond height, a cutting depth of 1-3/8", and a total length of 2-1/2". It is engineered for quick and easy drilling, reducing work effort and time.
For use: Begin with the pilot bit for precise positioning, then remove the pilot bit and use the main diamond hole saw with a wobbling motion to aid in debris removal and achieve clean holes with minimal effort