Arbor Spacer, Inside Diameter 0.5 in, Outside Diameter 0.75 in, Inside Diameter Tolerance +0.011/-0.000 in, Outside Diameter Tolerance +/-0.002 in, Thickness 0.062 in, Thickness Tolerance +/-0.0025 in, Keyway Width 1/8 in, Keyway Depth 3/64 in, Round...