... break, folding, wear-resisting, the effect is good. Velcro and psa with holes and no holes abrasive disc Features:1.Grain:Alumina;2 ... .grit:80-800#;3.Color:sky bule;4.Texture:white coated ... , steel, metal processing, electronics, paint, automobile, engineering machinery, etc. Velcro and psa with holes and no holes abrasive disc