PFERD POLIROLL Untapered cartridge roll consist of a coated abrasive wound in a spiral. The abrasive grain is embedded in the resinoid coating on the strong cloth backing material for maximum abrasive performance. Self-clamping due to a grooved conical arbor ensures that the cartridge rolls remain securely attached during use. Advantages: ¦As the outer abrasive material of POLIROLL cartridge rolls wears off, fresh abrasive grain is exposed; Very good stock removal; Easy to replace due to specialized holder. Application examples: Deburring work on bores and hard-to-reach areas; Removal of fillet weld seams on metal structures; Deburring work on castings. Recommendations for use: Always grind using the tip and not the surface, as otherwise the adhesive will be damaged by the heat produced; Always position the cartridge rolls with the bonded side towards the arbor. Specification: Diameter (inches): 1/2; length (inches): 1; Arbor hole (inches): 1/8; : Suitable arborsEDP 42060; Recom. Speed RPM: 12,000; Maximum Rotational Speed (RPM): 18,000; Abrasive: Aluminum Oxide A; Grit size: 60.