3M Microfinishing Film Roll 372L, 50 Mic 5MIL, 2 in x 450 ft x 3 inGeneral Information Brand 3M Bond Type Resin Core Type Plastic Country Of Origin United States Sold As Roll California Residents Proposition 65 Warning Dimensions and Specifications Backing Thickness (Imperial) 5 mil Core Size (Imperial) 3 in Core Size (Metric) 76. 2 mm Micron Grade 50 m Overall Length (Imperial) 450 ft Overall Length (Metric) 137. 25 m Overall Width (Imperial) 2 in Overall Width (Metric) 50. 8 mm Grit Non Pertinent Volume 393. 16