Diamond coated on the top and sides with 80 grit electroplated diamond, mounted on a 6mm (1/4") shank. Suitable for shaping and grinding various materials such as glass, stone, slate and very hard wood.

Choose between the following diameter and depth sizes:

• 25mm diameter x 8mm depth
• 30mm diameter x 9mm depth
• 35mm diameter x 10mm depth
• 40mm diameter x 12mm depth

To help prevent overheating and to preserve the life of the burr, use wet.