Feature: 1. Long Life: The diamond hole saw uses brazing technology to attach reliable ultra fine diamond sand to the coated steel body of the hole saw bit. The brazed hole saw has 10 times the service life of an ordinary hole saw. 2. Multiple Use: This diamond hole saw can be used as a tile drill, glass bottle drill, glass drill and granite bench top drill for cutting, providing excellent cutting strength for high accuracy and smooth cuts. 3. Wide Application: The diamond hole saw can be used for opening holes in granite, marble, artificial stone, glass, quartzite, glass tiles, etc. 4. High Efficiency: The diamond hole saw high temperature quenching craft, low resistance to cutting, neatly open the hole and not easy to break the edge, high efficiency of opening the hole, solve the trouble of various occasion need to punch the hole. 5. Plating Craft: The diamond hole saw is electroplated, so that the emery is firmly embedded in the cutting part of the edge, which is abrasion resistant and does not lose sand. 6. Fast Chip Evacuation: The cutter head section of this diamond hole saw has a cutout design with a glossy surface and large chip evacuation slots for easier chip evacuation and more efficient hole opening. Specification: Item Type: Diamond Hole Saw Material: Emery and High carbon steel Use: Widely used in all kinds of stone tiles, all porcelain, marble, granite Basic Parameters: Product specification: 16mm / 0.63in, 18mm / 0.71in, 20mm / 0.79in, 25mm / 0.98in, 30mm / 1.18in, 35mm / 1.38in. Package List: 6 x Diamond Hole Saw1 x Plastic Box