Metalworkers and fabricators, these SHUATI non-woven flap wheels are workhorses for finishing and polishing jobs! The 200mm diameter with 25mm height gives you good surface coverage, and the 20mm bore fits standard angle grinders and polishing tools. The green non-woven material is durable and doesn't blacken your workpiece like some cheaper wheels can. I've used these on stainless steel, aluminum, and even wood projects, and they leave a consistent, smooth finish without being too aggressive. The 240 grit is perfect for that final polish before buffing or for removing light scratches and oxidation. What's great about flap wheels is they conform to irregular surfaces better than rigid discs, so you get even polishing on curved or complex shapes. They handle up to 3000 RPM, which covers most tool speeds, and they wear evenly without developing flat spots. Whether you're working on automotive parts, metal furniture, fabrication projects, or restoration work, these wheels deliver professional results. The single wheel in the package is enough to get through multiple projects since they're wear-resistant and long-lasting. For the price, you're getting quality that performs as well as brand-name wheels costing twice as much. Keep one of these on your bench and you'll always be ready to put a beautiful finish on your metalwork projects!