Item Type: Spherical Rotary BurrMaterial: Carbon steelColor: BlackApprox. 10mm/ 0.4in Wood Carving Drill Head (suitable for angle grinder type 100)Shank Diameter: Approx. 25mm/ 1inDrill Diameter: Approx. 40mm/ 1.6in Package List:1 x Spherical Rotary BurrNote:Use only on non‑metal or non‑metal materials. 1. The sharpening knife can be used on non‑metallic or non‑metallic materials, suitable for angle grinder type 100, with good quality and very durable.2. There is a very rough coating on the sanding head, which can quickly remove the blank while maintaining a relatively smooth finish.3. The polishing tool is comfortable to use and easy to operate, allowing you to quickly remove various materials.4. Carbon steel teeth have longer burrs, providing you with excellent grinding results and long service life.5. The spherical grooved knife can quickly remove material, saving you time and energy, allowing you to focus on the task at hand.