All-in-One Complete Kit: The sanding attachment includes 120 pieces 3-inch sanding discs in 80-3000 grit, 1 piece 3-inch backing pad with foam, 1 piece 2-inch backing pad with foam buffer plate, 2 pieces 1/4 inch round and hex shanks, 2 pieces sponge sanding blocks. RPA20202 32023 Three methods for sanding different surfaces 1. No-clog sanding sponge. 2 pieces washable and reusable sandpaper blocks are highly elastic, flexible, and durable without tearing. The resilience of the sanding block is excellent, its plasticity is strong, and it is not easy to tear. Ideal for flat, edged, and contoured surfaces. High-quality construction. The sanding pads are made from high-quality aluminum oxide, providing a fast cut and a smooth finish to your project. The quick-change disc can be used with most electric and air tools, such as drills, grinders, and other rotary tools.