Features: 1NICKEL PLATING PROCESS: Diamond hole saw kit has a special nickel plating process on the surface which makes the drill bit better protected and has a longer service life. 2NOTCHED DESIGN: The cutting edge is designed with a notched edge which makes the drill easier to carry out when opening holes and more convenient to operate. 3WIDE RANGE OF APPLICATION: Diamond hole saw kit is perfect for making clean and accurate holes in glass tile ceramic plaster wood marble and granite. 4HIGH TEMPERATURE RESISTANCE: Tile hole saw kits are treated with a special high temperature resistant process so they can withstand the tremendous heat generated by drilling and sawing at high rotational speeds. 5WET AND DRY USE: Diamond drill bits work even without water as a lubricant you can also use water as an additional coolant to extend the life of the drill saw. Specification: Item Type: Diamond Hole Saw KitProduct Material: AlloyProduct Model: 1/4inch 5/16inch 3/8inch 1/2inch 16/25inch 5/8inch 11/16inch 3/4inch 7/8inch 11/5inchUse: For Drilling Glass Porcelain Ceramics Marble Granite Stone Bottles Flower PotsApplicable Tools: Electric Portable Drill Electric Drill Table Drill Magnetic Drill Etc.Gross Weight: 169g/6.0oz Package List: 10 x DiamondHoleSawKit