Spacer, Spacer Type Round, For Screw Size 1/2 in, Overall Length 3/8 in, Inside Diameter 0.505 in, Outside Diameter 1 in, Retaining Rib Diameter Not Applicable, Material Aluminum, Finish Plain, Pack Size Small Pack, System of Measurement Inch, Hex Width Not Applicable, Hex Width Tolerance Not Applicable, Inside Diameter Tolerance +/-0.010 in, Outside Diameter Tolerance +/-0.005 in, Overall Length Tolerance +/-0.005 in, Resistance Properties , Package Quantity 10