3M P50 127 mm x 22 mm Fibre Disc 988C, Qty of 25.

3M Fibre Disc 988C offers an exceptionally fast cut and extreme durability for high-pressure carbon and mild steel applications by combining 3M Ceramic Abrasive Grain with a stiff fiber backing. Designed for both long life and superior performance in aggressive, heavy-duty applications, ceramic fiber discs minimize edge wear, enhance productivity, and reduce material consumption.

Stiff fibre backing stands up to heavyweight applications such as high-pressure stock removal.
Ceramic grain requires less pressure, reducing operator fatigue.
Proprietary 3M Ceramic Abrasive Grain outcuts and outlasts aluminum oxide.
7/8" center hole mount is compatible with 3M disc pad face plates and hubs, and requires the use of a disc retainer nut (all sold separately).
Resin bond withstands heat and stabilizes the disc under pressure and heat to increase productivity.

3M Part Number: 60748