[Assorted Grit Disc Kit]: Includes 20pcs 125mm 80/150/240/400 grit mesh sanderpaper. (5 pieces each grit). [Feature]: High quality alumina sanding discs pads with special heat treatment, excellent polishing, sharp and wear resistant. Durable and antistatic, good choice for sanding and polishing. [Application]: Cooperate with grinding, grinder, sanding machine, etc. to smooth and polish gypsum board (in drywall), spatula, filler, wood, varnish and paint, plastic, metal. [Hook & Loop]: Hook and loop design, convenient for you to change out. Can be attched to an random orbital or DA Sander/Polisher. [Efficient economical]: Multifunctional net sanding material, super anti-clogging effect can effectively reduce dust deposition. It has better grinding effe.