3M™ Microfinishing Film Roll 372L, 40 Mic 5MIL, 1 in x 450 ft x 3 in (25.4mmx137.25m), Plastic Core, ASO, End Roll Mark Black

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Our 3M™ Microfinishing Film Roll 372L features micron-graded premium aluminum oxide bonded to a 5 mil polyester film backing to deliver uniform results and meet stringent surface requirements. A friction grip coating provides slip resistance for microfinishing machines where film slippage is an issue, and close tolerance work on cylindrical surfaces, such as automotive camshafts and crankshafts.