Awclub Glass Drill Bit - 12mm Diamond Coated Hole Saw Drill Bits for Glass Ceramic Tile Marble Rock Porcelain 5Pcs

Feature: 1. Designed for drilling 12mm diameter holes.cut clean and round holes to a depth of approximately 25mm. 2. Nickel-plated hole saw drill bit with a diamond dust coating offers superior performance and cutting strength. 4. Excellent for making clean and accurate hole on glass, tile, porcelain, marble and other fragile materials. 5. Start your hole diagonally, make a round trace and then hold drill straight. 7. Works better with an electric drill (Excluding in this item). 5. In order to prolong the life of this glass hole saw, please add coolant liquids or water when processing. otherwise the diamond coated drill bit will burn. Specifications: Cutting Diameter: 12mm / 15/32-inch Drilling Depth: 25mm / 1-inch Material: Metal,Diamond Particles Shank Size: 6.5mm / 0.26-inch(D) Total Length: 51mm / 2-inch Coating: Nickel Plated; Tip Coating Main Color: Silver Tone Speed: 800-1000RPM Package Content: 5pcs x Glass Drill Bit