Shim Stock Assortment, System of Measurement Inch, Shim Length 50 in, Shim Width 6 in, Thickness 0.001 in, 0.002 in, 0.003 in, 0.005 in, Length Tolerance +3.00/-0.250 in, Width Tolerance +/-0.005 in, Thickness Tolerance +/- 10 Percent, Material Steel, Material Grade/Class Grade 1008/Grade 1010, Finish Plain, Temper Full Hard, Color Not Applicable, Number of Pieces 4, Made in North America Yes, Manufacturer Location Made in USA*, Rockwell Hardness B90/B84