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3M™ Cubitron™ II Roloc™ Durable Edge Disc 947A — 2″, 60+ Grit, TR Button (3M Stock #7100077047) Edge-friendly quick-change disc built for low- to medium-pressure edgework. 3M’s Precision-Shaped Ceramic Grain cuts fast, runs cool, and resists loading; the X-weight poly-cotton backing stands up to edges without fraying. Roloc™ TR twist-on attachment for quick swaps.