25mm brazed core diamond drill bit for hole saw, hollow hole cutter for glass, porcelain, tile, marble, ceramic, granite

【Professional Diamond Hole Opener】Made of selected high-strength carbon steel and equipped with a diamond-coated drill bit, offering excellent cutting capacity, rust resistance, durability, high torque, and a long service life.

【High-Quality Hole Drilling】The diamond coating increases drilling speed and makes the drill bit cleaner. The pointed design reduces resistance and makes drilling more efficient, helping you accurately create smooth, round holes. A round chip hole on the side keeps the drill bit clean at all times.

【Ideal For】Specifically designed for drilling porcelain, glass, marble, ceramics, rock, granite, and more.

【Usage Tips】First, cut a 45° angle, create a groove by positioning the drill bit, then slowly raise the hole opener and drill at a steady speed. In addition, keep the drill bit wet while drilling to prevent overheating.

Diamond Drill Bit

This diamond drill bit allows you to remove a complete circle from glass, tiles, marble, granite, ceramic, or other materials.

Made of high-strength carbon steel, it is robust and durable, with excellent rust resistance, and can be used for a long time.

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

Clearance Hole

Diamond drill bits with a clearance hole facilitate the entry of cooling water and the removal of chips during drilling. This facilitates the drilling process.

U-groove design

Helps remove debris and improves drilling efficiency.

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

Hexagonal shank

Hexagonal shank design for more stable drilling.

Vacuum brazing technology minimizes breakage and ensures greater longevity.

Material: High-strength carbon steel

Size: 25mm

Package includes: 1 pc 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 pressure Drilling and increased use of water lubrication will significantly extend the life of your drill bits.

Use coolant.

Minimum pressure.

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

As a general rule, the smaller the drill bit diameter, the higher the drilling speed. The harder the material, the slower the drilling speed should be.

If you smell burning, back off! Either your speed is too high or you are applying too much pressure. Your drill bit should never be hot to the touch, not even warm.