Compatible right angle head grinder attachments are designed for use with standard 4.5 or 5 inch American angle grinders with 5/8-11 threads. No adapters required—simply thread directly onto the angle grinder spindle. High carbon steel material provides excellent wear resistance, making these angle grinder ball grinding heads ideal for roughing, moderate shaping, contouring, and grinding. The wood grinder ball gouge features hundreds of powerful burrs that enable rapid material removal, efficiently shaping large amounts of wood while leaving a smooth finish. Suitable for both wet and dry wood materials, ensuring fine and clean sanding results. Ball head diameter: 40mm, 25mm. Shank diameter: 25mm. Cylindrical head diameter: 30mm, 20mm. Cylindrical head depth: 40mm. Package includes 2 ball grinding heads and 2 cylindrical grinding heads to meet daily use and replacement needs. This multi-purpose sphere rotary burr is suitable for hand wood shaping, hollowing, undercutting wooden workpieces, and roughing out wood. Ideal for carving wooden bowls, spoons, trees, and other wooden artifacts. Color: Black Material: High-carbon steel Package Contents: 4 x Wood carving tools Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3 cm.