'Arbor Shim, Low Carbon Steel, Full Hard Temper, Thickness 0.047 In, Thickness 1.194mm, Thickness Tolerance +/-0.002 In, Inside Dia 1 1/4 In, ID Tolerance +0.011 In, Outside Dia 1 3/4 In, OD Tolerance +/-0.002 In, Tensile Strength 80, 000 PSI, Rockwell Hardness B90, Meets AISI 1008-1010, Package 10'