3 Review(s)

Designed for drilling 20mm diameter holes. 2. Nickel-plated hole saw drill bit with a diamond dust coating offers superior performance and cutting strength. 3. Cut clean and round holes to a depth of approximately 30mm. 4. Excellent for making clean and accurate hole on glass, tile, marble and other fragile materials. 5. Always use lubrication (water), otherwise the diamond coated drill bit will burn. 6. Start your hole diagonally, make a round trace and then hold drill straight. 7. Works better with an electric drill (Excluding in this item). Specifications: Product Name: Glass Hole Saw Material: Metal Body Coating: Nickel Plated; Tip Coating: Diamond Plated Cutting Diameter: 20mm / 0.8-inch Drilling Depth: 30mm / 1.2-inch Shank Diameter: 8mm / 0.3-inch Total Length: 55mm / 2.2-inch Revolutions Per Minute: 800-1000 Main Color: Silver Tone Weight: 123g Package Content: 5 x Glass Hole Saws.