This is a whatchamacallit. Not sure what it goes to or fits, but my guess is if your missing one you will know when you see it. Maybe this is it. Has a round shaft est 7/16 round, with a rectangular deep cavity beside it measuring approx 7/16 x 5/16". Is 6 1/4" in length total. Looks like it is a pretty important piece of hardware. If you know what this goes to please send me a note, would love to know . .chances are others will appreciate it too. I take pride in my pictures, and are a valuable extension of my description. Please take time to see the product fully. Buy with confidence! All items are packaged with great care and shipped next day, excluding any weekends and holidays. I will combine shipping whenever possible as long as the products can be safely packed together. BLOWOUT SPECIALS - CHECK OUT MY STORE, from time to time I will liquidate items, and insert ?BLOWOUT? in the title, which means the item has been deeply discounted and won?t last long . . ! FEEDBACK - Please remember to leave feedback, it helps to keep good sellers . RETURNS - Returns are accepted. Must be returned in the same condition as received and in same or similar packaging TAXES - FYI, all Ohio residence and even some other states will be required to pay sales tax ? per government requirements, when checking out.