8" Hook & Loop Red Heat Trio Orbital Discs - R955 Cloth. Turn up the Heat with Norton SG Red Heat Hook & Loop edger discs for easy fastening Used on multi-disc TRIO sanding machines to produce a finer finish and flatter floor than belt or drum machines Exclusive technology, unrivaled performance The Norton BEST tier represents products unmatched in the industry, that provide the lowest total sanding cost for the application Norton SG Red Heat Orbital Discs - R955 Cloth 100% patented SG (Seeded Gel) ceramic alumina abrasive for longest life, fastest cut and more consistent finish Tough X-weight polyester cloth backing is extremely flexible and shock absorbent for extreme conditions No risk of color transfer with assured color consistency Ideal for larger jobs and harder A/O finishes.