Includes 10 x grinding wheels. Outer diameter: 115 mm, Bore diameter: 22.23 mm, Weight: 950 g. Sanding discs are made of high-quality zirconia corundum glass paper. The maximum rotation speed can reach 13300 rpm, helping you further increase work efficiency. Compared to ordinary discs, they have a high grinding capacity, low noise, friction, and heat resistance (reticular glass core) , ensuring high grinding performance. They are designed with a highly secure fiberglass backing plate that can absorb vibrations during use. This set fits all common angle grinders, suitable for stainless steel, metal, and wood. They are ideal for welds, deburring, rust removal, and cast brushing. It is also suitable for removing coarse rust, paint, varnish, tarnish, scale, smoothing of coarse wood.