Amazon.com: METOWARE Trailer Hitch Trip Ball Hitch & Hitch Pin, Trailer Hitch Ball with 1-7/8 Inch, 2 Inch and 2-5/16 Inch Fit 2 Inch Receiver, Hollow Shank Tow Hitch, Black : Automotive
Reese Class III/IV, 2-5/16-in Dia Chrome Towpower Standard Hitch Ball in the Trailer Hitch Balls department at Lowes.com
Reese Towpower 7028600 Reese Towpower Standard Hitch Balls | Summit Racing
Steel Interlock Hitch Ball, 1-7/8 x 3/4 x 2-3/8 In. | Killingworth True Value
Reese Towpower 4 In. x 5-1/4 In. Drop Standard Hitch Draw Bar - Thomas Do-it Center