3M Diamond Microfinishing Film Roll 675L, 45 Mic 5MIL, GrayGeneral Information Brand 3M Country Of Origin United States Sold As Roll California Residents Proposition 65 Warning Return Policy NCNR Non Cancellable Non Returnable Dimensions and Specifications Backing Thickness (Imperial) 5 mil Core Size (Imperial) 3 in Core Size (Metric) 76. 2 mm Micron Grade 45 m Overall Length (Imperial) 50 ft Overall Length (Metric) 15. 24 m Overall Width (Imperial) 4 in Overall Width (Metric) 101. 6 mm Grit Non Pertinent