Features: Best material-The perfect grade of carbide provides the best combination of the sharpness and durability Most convenient-Designed with 30° cutting angle ground to finish for making smooth cuts in any hard wood Excellent for Hollowing bowls, Designed for all small &middle size hollowers. Mounts with Flat screws M5x8mm, Leaves smooth finishing after cut.Use it with the Round Carbide Turning Tool to get smooth finishes on concave surfaces and hollowing jobs. Many wood turners purchase these for replacements on popular carbide woodturning tools or for their own woodturning tool designs. This solid carbide cutter are sharpened on diamond wheel and can be rotated to give you edge in few seconds. Specifications: Material: Hard Carbide Diameter: Approx.12mm/0.47in Bore: 2.5mm Degrees: 30 Package Includes: 10xInsert Cutter note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.