25Mm Brazed Core Diamond Hole Saw Drill Bit Hollow Hole Cutter For Glass Porcelain Tile Marble Ceramic Granite

【Professional Diamond Hole Opener】Made of selected high-strength carbon steel and diamond-coated drill bit, excellent cutting ability, rust-proof and durable, high torque and long service life.

【High-quality Hole Drilling】Diamond coating can increase drilling speed and make the drill sharper.

The cutting edge design makes the resistance smaller and more efficient, helping you drill a smooth round hole accurately.

Round chip hole on the side to keep the drill clean at all times.

【Ideal for】Diamond brazing specially designed for porcelain, glass, marble, ceramic, rock and granite, etc.

【Usage Tips】First, you can cut a 45° oblique, open the positioning crescent groove, then slowly erect the hole opener and drill at a uniform speed.

Besides, keep the bit wet when drilling to avoid overheating.

Diamond Drill Bit This diamond core bit can remove a complete circle from glass, tile, marble, granite, ceramic or other materials.

Made of high-strength carbon steel, sturdy and durable, with excellent anti-rust performance, it can be used for a long time.

The cutting port design is matched with the round chip hole on the side to effectively increase the drilling speed and keep the bit clean.

Clearance Hole Diamond drill bits with clearance hole make it easy for cooling water to enter and chips to escape when drilling.

This makes the drilling process easier.

U-Groove Design Helps remove debris and improve drilling efficiency.

High-quality diamond grains provide faster drilling and a better finish.

Hex Shank Hex shank design for more stable drilling.

Vacuum brazing technology minimizes breakage and ensures longer life.

• Material: High strength carbon steel Size: 25mm Package Includes: 1Pcs x Diamond Hole Saw Drill Bit Please Note Always use water for lubrication, otherwise the diamond drill bit will burn

Can be used with a standard electric drill.

Make a half-round mark, then hold the drill straight.

Reduced drilling speeds, low drilling pressure, and increased use of water lubrication will greatly extend the life of the drill bits.

Use coolant.

Minimum pressure.

For drilling granite, marble, masonry, concrete, tile, ceramic, hard plastic, etc.

As a general rule, the smaller the diameter of the bit, the higher the drilling speed.

The harder the material, the slower the drilling speed should be.

If you smell a burning smell, back off! Either your speed is too high or the pressure you are applying is too much.

Your drill bit should never be hot to the touch, not even lukewarm..