EXTREME HARD - Made of industrial grade carbon steel with nickel-coated body to resist corrosion. THICKEN DIAMOND COATING - on the tops offers superior cutting strength for maximum drilling outcomes. LARGE CLEARANCE HOLE - The glass hole saw set along the drill bit facilitate the entrance of cooling water and escape of chips and other particles from drilling. WIDE USAGE - Ideal for drilling glass, tile, porcelain tile, ceramic tile, brick, and stone. NOTE - Please keep adding water when drilling to extend the life.Besides the water lubrication will improve the drilling experience. High Rigidity Diamond

This tile hole saw are made of industrial grade carbon steel with nickel-plated coated body that resist corrosion. Thicken corundum coating on the tops offers superior cutting strength for maximum drilling outcomes.

Extraordinarily Sharp

Each hole saw drill bit was processed by a smooth and exact finish that lower the incision resistance and drill pressure, increase the sharpness and the use of water lubrication. Excellent for making clean and precise hole on glass or ceramic and considerably extending drill bit life.

Large Clearance Hole

These ceramic drill bits along with large clearance hole facilitate the entrance of cooling water and escape of chips. Making the drilling process more easy and relax.

Widely Application

There are 5pcs 7/8 in 0.87IN (22mm) ​glass drill set included in the package. Perfect for drilling glass, tile bottles, blocks jars, fiber glass porcelain tile ceramic, vitrified, brick and stone.

Package Contains

5Pcs* Diamond Coated Drill Bit

Attention:

Please keep the speed within 800-1000 per minute, low drill pressure and increased use of water lubrication will extend drill bit life.
And please keep adding water when the diamond drill bits are working on the glass or ceramics.