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#4,6,8,10 inchHigh ... .3.Application: Used for maintaining,repairing and renewing granite, marble,concrete,etc. After rough grinding and fine polishing with the pads, the ...