Metal grinding disc,diamond grinding disc,diamond polishing disc. 4,6,8,10 inch available. Metal grinding disc,diamond grinding disc,diamond polishing disc.1. DescriptionGritSizeCharacteristicsDiamond Grinding Disc50#,200#,400#4 ... / clearness.3.Application: Used for maintaining,repairing and renewing granite, marble,concrete,etc. After rough grinding and fine polishing with the ...