10-piece diamond hole saw drill bit set 3-50 mm for ceramic, glass, porcelain, marble, granite (3/4/5/6/8/10/12/18/32/50 mm)

Durable Material: These diamond drill bits are made of high-strength carbon steel with a nickel-plated surface to extend their service life. Wait at least six months to one year before grinding the cutting workpiece.

Clean and Smooth Cutting: The diamond hole saw is coated with high-quality, uniform diamond to increase drilling speed and precision, and can cut smoothly without broken edges to achieve an excellent cutting effect.

10 Different Sizes: The drill bit set includes 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 of your different needs.

Side Opening and Laser Marking: The side grooved hole design allows the drill bit to remove debris to keep the drill bit clean. Laser marking makes the size marking clearer and more durable than other drill bits, and it won't wear off easily.

Wide application: The drill bits can be used with a standard electric drill. Widely used in marble, porcelain tiles, glass, floor tiles, glass blocks, granite, etc. When cutting hard materials, please use lubrication (water) to extend the service life.

Contents: 10 diamond drill bits