[Function]: This rotary cutter is a spherical wood carving tool that can quickly grind wood grooves with a diameter of 40mm in woodworking projects. [ Polishing processing Fine ]: Use the fine polishing treatment, cutting edge and wear resistance, which is especially suitable for finishing. [High quality]: Grinding ball that is resistant to wear. The anti-wear process in carbon steel can increase wear resistance and has a long service life. The Ball Gouge can handle speeds up to 12000 RPM. [Easy to Use]: Convenient and convenient operation allows you to easily remove various materials. Coarse coating can quickly remove the substance while maintaining a relatively smooth finish. [Two options]: 14 mm type suitable for 115 and 125 type angle grinder, 10 mm type which is suitable for 100 type angle grinder, you can choose to buy and use. Angle grinder not included. It should only be used on non-metallic materials. Product Features: 1. Function: This rotary cutter is a spherical wood carving tool that can quickly grind 40mm diameter wood slots in woodworking projects. 2. Fine polishing treatment: use fine polishing treatment, cutting edge and wear resistance, which is especially suitable for finishing. 3. A good assistant: It can save time and energy, allowing you to focus on the task at hand. 4. Ease of use: Convenient and convenient use allows you to easily remove various materials. Note: Grinding head only, grinder not included. It should only be used on non-metallic materials. Specification: Material: Carbon Steel Color: Black< /p> 1. Hole diameter: Approx. 10mm, 14mm (suitable for angle grinder) 2. 10mm: Suitable for 100 type angle grinder. 3. 14 mm: Suitable for angle grinders type 115 and type 125. 4. Drill head diameter: About 40mm / 1.6inch 5. Drill head length: About 40mm / 1.6inch 6. Tool handle outer diameter: About 25mm / 1.0 inch 7. Total length: About 108 mm / 4.3 inches Package includes: 1 * Rotary grinding head