1. The grinding head is made of high-quality wool, soft and delicate 2. Application: for fine polishing of wood carving, nuclear carving, jade carving, tooth carving and other materials 3. Shape: cylindrical grinding head 4. Shank: about 3mm in diameter 5. Head: diameter about 25mm, thickness about 15mm 6. Product length: about 50mm 7. Weight: about 3.9g