Ceramic Diamond Polishing Pads for concrete floorCeramic bond diamond polishing pads are used as transitional pads and can reduce the need for metal bond diamonds. They can easily remove the cutting marks left over by metal bond discs and prepare the floor for polishing with resin bond diamond pads. One set including 30, 50,100,200,400gritAfter 30 grit metal bond diamond start to use 50 grit ceramic pads up to 400, then switch to resin bond diamond polishing padslasts up to 20,000 sq feet6mm thicknessVelcro backed Item No.SizeGrit No.Velcro ColorThicknessC6000013"/76mm30Purple6mmC60000250 GreenC600003100 BlackC600004200 RedC600005400 Yellow