Cartridge rolls are tightly wound strips of emery. Cartridge rolls are 1″ long and 1/8″ to 3/4″ in diameter. The can be cylindrical or tapered to a point. Cartridge rolls are mounted on a shaft that has a pilot ending with tapered threads. They are used with die grinders, right angle, and 45 degree angle heads. Cartridge rolls are good for smoothing fillets, inside diameters, and runners.
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