Diamond drill bit for brazed core hole saw 25 mm, hollow hole cutter for glass, porcelain, tiles, marble, ceramics, 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 bit sharper. The tip design makes the resistance smaller and more efficient, helping you drill a smooth, round hole precisely. Round chip hole on the side to keep the drill bit clean at all times.

【Ideal for】Diamond brazing, especially for porcelain, glass, marble, ceramics, stone and granite, etc.

【Usage Tips】First, you can make a 45° bevel cut, open the crescent-shaped positioning groove, and then slowly straighten the hole opener and drill at a steady speed. Also, keep the drill bit moist while drilling to avoid overheating.

【Buy with confidence】If you have any questions, please feel free to contact us. We will do our best to solve the problem for you. (Please clamp the tree in the correct position and take the necessary protective measures during wood processing.)