These are some parts, made of aluminium oxide paper material, they are durable and safe. Used for polishing various metals, iron, aluminum, wood, ceramics, artificial stone, furniture and wood products, metal, etc. good emery papers for you.Features- Color: Dark red.- Material: Aluminium oxide- Size: 4.00 x 1.27 x 1.27cm/ 1.57 x 0.50 x 0.50 inch.- Made from premium alumina particles and high-quality resin binders that are durable, anti-static and provide longer-lasting grit.- Universal design fits the majority of 6-inch sanders on the market.- The dry sandpaper with strong adhesive backing wont detach during operation.- Applications: wood, aluminum, non-ferrous metal, plastic, fiberglass, painted surfaces.- From rough to fine to satisfy almost all your general polishing requirements.