This 3M Fibre Disc is designed for heavy-duty grinding applications, primarily for preparing metal surfaces. With an aggressive 80+ grit and durable construction, it removes rust, scale, pits, and welds quickly and effectively, saving you significant time during surface prep and blending.
- The 1187C ceramic abrasive grain formulation cuts faster and lasts longer than traditional aluminum oxide discs, meaning fewer disc changes and increased uptime on the job.
- Its rigid fiber backing ensures consistent performance under high pressure, resisting edge wear and tearing, which contributes to greater safety and disc life.
- The 4 1/2″ diameter and 7/8″ center hole are standard dimensions, making it compatible with most angle grinders commonly found on industrial worksites.
Who this is best for
This disc is ideal for metal fabricators, maintenance crews, welding shops, and anyone performing serious stock removal, weld leveling, or heavy material preparation on steel and stainless steel.


