Shim Stock,10 In. W,20 In. L,0.004 In. Thk,PK10, Shim Length 20 in, Shim Width 10 in, Thickness 0.004 in, Length Tolerance +/-0.063 in, Width Tolerance +/-0.063 in, Thickness Tolerance +/-5 Percent, Material Polyester, Material Grade/Class Ungraded, Finish Plain, Temper Not Rated, Color Tan, Application Gaskets, Various Manufacturing Applications, System of Measurement Inch, Material Quality Standards L-P-377, Pack Size Small Pack, Tensile Strength 30,000 psi