1 pc blue glass sand paper abrasive pad. 1 pc green glass sand paper abrasive pad. last step: polishing with red polishing pad with water, 4500rpm. 1 pc red polishing pad.
1 pc blue glass sand paper abrasive pad. 1 pc green glass sand paper abrasive pad. last step: polishing with red polishing pad with water, 4500rpm. 1 pc red polishing pad.