Perfect Dimensions: 225mm diameter, 6 holes (40-240 grit) can satisfy your polishing needs and achieve a good rough smooth effect in the end. High Quality: Sanding disc is equipped with thick P-class paper base, made of high quality alumina with abrasion resistant sand, high strength resin bonding system increases service life High Quality: Sanding disc is equipped with thick P-class paper base, made of high quality alumina with abrasion resistant sand, high strength resin bonding system increases lifetime. Durable and anti-static, good choice for smoothing and polishing. Easy to use: 225 mm sanding discs, easily replaced and used wet and dry. Hook and loop, easy and quick to attack, strong and durable, will not fall off when installed in use, easy to install and remove. Wide range of applications : Mainly used for furniture, decorations, rust removal, solid wood, floors, wall grinding and polishing. Primers, fillers, plaster, metals, wood, thermosetting plastic, artificial stones, expanded polystyrene, plastic cement.