For Size125 mm/5 inch in diameter, with 8 pre-drilled holes for dust extraction, suitable for Random Orbit Sanders/Sanding/Polishing/Derusting. Easy to Change - Durable reverse velcro makes sanding disc change more easy and convenient; Hook and loop backing for faster assembly.For Size Sanding DiscsCompatible with all brands of sanders. Such as Random Orbital Sanders / Ryobi Random Orbital Sander / Makita Random Orbital Sander / Vonhaus Random Orbital Sander / Bosch PEX 400 AE / Bosch pex 220 Sanding Discs / Makita 18V Random Orbital Sander Pads / Makita Random Orbital Sander Pads / Orbital Sander Discs cordless Makita dbo180z 18v ect.100Pcs Set10 pieces of 40#60#80#100#120#180#240#320#400#800 grit, the 10 grades can meet almost all your polishing requirements.Versatile Sanding DiscsSuitable for grinding polishing wood, jewelry, glass, stone, car, machinery, metal, non-metal, rubber, leather, plastic etc.< /p>High Quality Sanding disc is equipped with a thick D-class paper base, made of high quality alumina with abrasion-resistant sand, the resin bonding system with high resistance increases the service life.