3M Microfinishing Film Belt, 372L, 9 micron, 1 in x 42 in (25.4 mm x 1066.8 mm) The 3M Microfinishing Film Belt is designed to help you get the finest finish possibleWith micron-graded aluminum oxide mineral bonded to a durable polyester film backing, this belt is optimized to produce a fast cut-rate and a uniform finishUse the 3M Microfinishing Film Belt on composites, plastic, fibreglass, and metal and help achieve finishing excellence. Product Information Brand 3M Part # 7000139197 Origin Country USA Product InformationClosed coat construction provides good grain density and helps deliver a finer finishDurable polyester film backing provides flexibility for consistent finishingMicron-graded aluminum oxide abrasive cuts fast and provides a consistent, fine finishResin bonding resists deterioration from heat, extending the life of the abrasive belt
