Check the listing for details. 80 Grit Type #29 Flap Discs 4 1/2 inch Wheel Sanding Disc - 10 Pack. Condition: New. Listed at 18.95 USD. This Flap wheel disc is ideal for sanding, grinding, deburring, finishing, etc. for cast Iron, steel, stainless steel, titanium, fiberglass, wood, and more.Each angle grinder sanding disc measures at 4-1/2-inch diameter with a 7/8-inch arbor size, making it compatible with grinders operating up to 13, 300 RPM. Grinder sanding discs have long-lasting use. A safe and effective product made with durable Material. Its fast polishing, and it has durable fiberglass backing and fine crystal size. The flap discs are made with a fiberglass backing plate that effectively absorbs vibrations without smear during usage, bringing more stable and efficient grinding.Multi-Purpose Sanding Discs - Grinder sanding discs is designed to grind various materials, can be used for metal or wood processing, concrete grinding or finishing, stone smoothing or finishing, rust removal, welding mixing, deburring or deburring, etc. suitable for angle grinders with 7/8 arbor.Ideal for The Home, Workshop, Hobbyists, Tradesmen, Builders and DIY Enthusiasts, etc. Die repairing of iron and non-ferrous metals, stainless steel, stone and plastic, as well as grinding of welds, weld scars, and flash burrs of stamping parts.