3M Lapping Film 261X, 9.0 Micron Roll, 3 in x 600 ft x 3 in ASOGeneral Information Brand 3M Attachment Type Plain Back Product Series 261X Country Of Origin United States Sold As Case California Residents Proposition 65 Warning Dimensions and Specifications Backing Thickness (Imperial) 3 mil Backing Thickness (Metric) 0. 076 mm Micron Grade 9 m Overall Length (Imperial) 600 ft Overall Length (Metric) 182. 88 m Overall Width (Imperial) 3 in Overall Width (Metric) 76. 2 mm Width 9. 02 in 22. 9 cm Height 4. 02 in