10pcs 3-50mm Diamond Hole Saw Bits for Ceramic, Glass, Porcelain, Marble, Granite (3/4/5/6/8/10/12/18/20/22/25/50mm)

Durable Material: These diamond drill bits are made of high-strength carbon steel with a nickel-plated surface to extend their life. The cutting edge should be cleaned for at least six months to a year before grinding.

Clean and Smooth Cutting: The diamond hole saw is coated with high-quality uniform diamond to increase drilling speed and accuracy. It can cut evenly without broken edges for excellent cutting performance.

10 Different Sizes: The drill bit set contains 10 different sizes: 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 18 mm, 32 mm, and 50 mm. The quantity and size are sufficient to meet most different needs.

Side Opening and Laser Marking: Thanks to the side-groove hole design, the drill bit can remove residue to keep it clean; Thanks to laser marking, the size marking will be clearer and more durable than others, and it is not easy to wear out.

Wide Application: The drill bits can be used with a standard electric drill. Widely used on marble, porcelain tiles, glass, ceramic tiles, glass blocks, granite, and so on. When cutting hard materials, use lubrication (water) to extend their life.

Package: 10 diamond drill bits