Diamond Drill Bits, Glass Hole Saws 6–50 mm for Diamond Coating, Carbon Steel for Glass, Ceramic, Porcelain, Ceramic Tile, Marble (16 Pieces)

Diamond coating and nickel-plated surface - Diamond coating can increase drilling speed and make the drill bit sharper; a nickel-plated surface can extend the service life and improve the surface's corrosion resistance. The thickened diamond coating on the top can provide excellent cutting power to achieve maximum drilling effect.

Saw - 16-piece diamond hole saw - comes with 16 pieces drill bits in various sizes, including 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 25 mm, 28 mm, 30 mm, 35 mm, 40 mm, 45 mm, and 50 mm. Laser marking, the size is clearer than other sizes and not easy to wear.

Application - Suitable for drilling holes in glass, marble, ceramic tiles, block pots, fiberglass tiles, slate marble, light granite, etc. Used with all electric drills and hammer drills.

Side hole opening and laser marking - The side hole design helps prevent waste and keep the drill bit clean; laser marking, the size marking is clearer and more durable than others, not easy to wear.

Note - Do not use on concrete or depths greater than 1/2 to avoid reducing the speed of the diamond tip and reducing the punching pressure. Since the friction between the drill bit and the material quickly generates heat, the drill bit must be kept moist. When using diamond drill bits, please use lubricant (water), otherwise the hollow diamond core bit will burn.