Designed to work within the patented GlassRenu Scratch Removal Process, RenuDisks allow restoration technicians the ability to grind below the surface of the damaged glass quickly and evenly. Utilizing a proprietary abrasive the RenuDisks represent the culmination of a decade of research and development. The disks employ a special cushioned design that allows for rapid scratch removal from glass without leaving trace marks or discernible distortion even on very deep scratches. 10 per pack.