size : 2" can be with roll lock , other sizes such as 5"  8" 9" 10 "  are without roll lock
 
 Special electroplated process provides durability and very long life
 Provides aggressive cutting with reduced loading
 Quick Change Roloc discs make grade changes easy
 Perfect for cleaning and polishing metal, ceramic, stone and composites.
 For flat, edge, contour grinding and polishing.
 Heavy-duty, water resistant, Senior nylon backing