Mini GrindR discs are long-lasting and have high performance, with endurance and assurance. The Mini GrindR uses a type R plastic roll on lock design as its base. the grain is fused directly to a tough polymer backing – not paper, cloth or fiber but plastic. This one-piece design prevents the risk of detaching, while the polymer promotes cool, efficient grinding. Available in assorted grits, sizes and minerals. Visit www.gemtexabrasives.com.