Arbor Shim,Polyester,0.0015 in Thk,PK10, Product Type Shim, Round Shim Type Arbor Shim, Inside Diameter 1.375 in, Inside Diameter Tolerance +0.005/-0.015 in, Outside Diameter 1.875 in, Outside Diameter Tolerance +/-0.005 in, Thickness 0.0015 in, Thickness Tolerance +/-0.000075 in, Material Polyester, Material Grade/Class Ungraded, Finish Plain, Color Purple, Temper Not Rated, Material Quality Standards MS LP-377, Tensile Strength 30,000 psi, Properties Corrosion Resistant