... : for polishing metal, marble Specifications Polishing Disc,abrasive disc,sanding disc Features: 1) Semi-flexible sanding disc 2) Purpose: for polishing metal, marble ... andPolishing Disc,abrasive disc,sanding discFeatures : 1)Semi-flexible sanding disc 2)Specifications: 4",4.5",5",6 ... ") 5,000pcs per day, (6"-7") 3,000pcs per day abrasive super-flex sanding disc