Utoolmart 20mm Diamond Grit Hole Saw Drill Bit for Glass Ceramics Porcelain Ceramic Tile 1Pcs

The hole saws are made of diamond and high carbon steel, offering a combination of hardness and toughness for wear resistance.Small incision resistance,feature drilling stably, fast speed, not breaking the border Opening neat, smooth, no broken edges, no tremor phenomenon, chip Easily.Side holes allow for easy slug removal after drilling.Perfect for cutting accurate holes in a wide variety of materials such as glass and ceramics.Diamond coating maximizes performance and retains a sharper cutting edge than traditional carbide or bimetal hole saws.