Item offered for sale is NOS Arts Way shear hub, part number: 252160. Measurements are approx: W 4" H 2-1/4" hole diameter 1-7/16". The hub has a mounting flange with two holes and one end is milled for a grease seal. This item is new and has never been installed but has been in storage for an extended period of time and there is dust/grime/slight surface rust on the item which does not effect usability. USPS shipping is available as well as local pick up.