Diamond Dry Drum Wheel    These tools are used for granite, marble and stone countertops grinding and polishing. Zero tolerance grinding wheel. They can fixed on polishers and grinders.Threads:  5/8-11, M14Dry use only.One set including 50,100,200,400,800,1500,3000 Available sizes: 2"x2"RPM: 2000Item No.SizeGrit No.ThreadsC1004622"x2"/(50x50mm)505/8-11M14C100463100C100464200C100465400C100466800C1004671500C1004683000Galaxy wet polishing pad      These tools are revolutionary make metal bond segment and resin bond perfect combination. Dot grinding principle gives full play. Grinding is more efficient, more smooth. Both dry and wet use. Suitable for hard floor grinding. But dry use are highly recommended. They are suitable for any stones and floors grinding.With velcro back. And velcro color can be changed as requested.Most aggressive and sharpeness.One set including 30,50,100,200.Available sizes: 3",4"Thickness: 4mmWet use.RPM: 4000Item No.SizeGrit No.Velcro ColorThicknessC2002313"/80mm30Purple4.0mmC20023250  Dark BlueC200233100  YellowC200234200  Orange