3M Microfinishing Film Roll, 372L, 20 micron, 1.79 in x1500 ft x 3 1/2 in (45.5 mm x 457.2 m x 88.9 mm) The 3M Microfinishing Film Roll 372L features micron-graded premium aluminum oxide bonded to a 5 mil (0.13 mm) polyester film backing to deliver uniform results and meet stringent surface requirementsA 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. Product Information Brand 3M Part # 7100046664 Length 1500ft Width 1.79 Material 372L Micron 20 Origin Country USA Product InformationColour-coded by grade for error proofingDurable polyester film backing provides flexibility for consistent finishing on contoured surfacesMicron-graded aluminum oxide abrasive cuts fast and provides a consistent, fine finishPolyester film backing can be run wet
