Black ball grinding head with spherical rotating burrs designed for installing standard 4.5-inch or 5-inch American angle grinders, with threads of 5/8-11. Just screw it directly onto the spindle of the angle grinder without the need for an adapter. Very suitable for rough machining, medium shapes, contours, and grinding. The accessory of the angle grinder is composed of hundreds of erosive burrs, which can quickly remove a large amount of wood while maintaining a smooth surface, processing damp or dry wood, ensuring fine and clean grinding of the wood. The ball grinding wheel is made of carbon steel, which has first-class durability, low wear, and can be used for a long time. It works well in cork such as spruce, pine, oak, and beech. More durable than sandpaper pads, improving efficiency. Electric spherical grinder accessory, used for manual wood shaping, hollowing out, and bottom cutting of wooden workpieces, as well as rough machining of a piece of wood. Very suitable for carving wooden bowls, spoons, tree faces, and other wooden artworks. Wear goggles, masks, and heavy work gloves during installation. It can only be used after removing nails and other foreign objects from the wood. Be sure to firmly grasp the angle grinder with both hands and slowly remove the wood. Maximum 12000 revolutions per minute. Suggest using an adjustable speed electric angle grinder.