Description:1.Polyester abrasive can use in dry and wet environments2.Hook and loop sandpaper backing makes grit changes quick and easy, and lengthens the life of the abrasive3.Suitable for wood, metal polishing painting,etc. Specification:Grit : 400 GritTotal Size : 5 x 0.02inch/125 x 0.5mm(D*T)Hole Quantity : No HoleColor : GreenAbrasive Material : PolyesterBack Material : Flocking Package Content :5pcs x Sanding Discs.