Brand new never installed goose neck hitch adapter. Anderson model 3100 for 2 516 inch ball 2 516It has been sitting in storage and was never used. The box got messed up so I only took a picture of the front of the box to prove the model.Dont weld to your trailer spin box. Use this convenient converter so if you ever sell the trailer you can take the adapter with you. This sells for 490 on Amazon.