Arbor Shim, Shim Material Steel, Grade 1008-1010, Shim Thickness 0.047 in, Thickness Tolerance +/-0.002 in, Inside Dia. 0.875 in, Inside Dia. Tolerance +0.011 in, Outside Dia. 1.375 in, Outside Dia. Tolerance +/-0.002 in, Shim Temper Full Hard, Tensile Strength (PSI) 80,000 psi, Rockwell Hardness B90, Meets/Exceeds AISI 1008-1010, Package Quantity 10