... Velcro and psa with holes and no holes abrasive disc Paper is not easy to break, folding, wear-resisting, the effect is good. Velcro and psa with holes and ... no holes abrasive disc Features:1.Grain:Alumina;2.grit: ... processing, electronics, paint, automobile, engineering machinery, etc. Velcro and psa with holes and no holes abrasive disc