General description Durable and sharp, the Rotary Spherical Burr Ø 40 mm is designed for effective carving on metal and wood. Made from carbon steel, it features a deterrence process that enhances wear resistance, ensuring a long service life. The burr is equipped with hundreds of sharp serrations around the wheel, making it suitable for most non-metallic materials. Technical specifications Diameter: Ø 40 mm Material: Carbon steel Installation Easy to install by simply screwing it in. Usage Ideal for milling recesses, slots, hollow profiles, and free forms. Suitable for wood, fiberboard, multi-layer board, solid wood, and MDF board. Compatible with straight grinders for woodworking. Other information Compact size and lightweight for easy portability.