Grain: Superior Aluminium Oxide Backing: Import latex paper Grit: P60-80-100-120-150-180-240-320-400-600 Size: normal diameter 125mm(3’’ to 9’’ can be customized) Packing: 100pcs/box, 3000pcs/carton Application: It is used on pneumatic/electric tools to sand and polishing wood, instrument, auto, artware, aluminium alloy,etc. Characteristic: Paper backing contains latex,super surface coating has better anti-clogging and anti-static performance.https://www.byabrasives.com/sandpaper/sanding-disc-with-velcro-or-psa/sanding-discs-for-angle-grinder.html