Hub Oil Cap / Oil Fill Hubcap, Fruehauf / Pro-par, Clear, 6.875" Outside Diameter X 1.875" Tall With 6.250"-8 Threads, Can use 4-13/16"-8 Point Spindle Nut Wrench, For Threaded Hubs With Straight Spindle Using HM518445/HM518410 Inner And Outer Bearings, Includes O-Ring And Plug