Ft Knox Hitch Lock for the Anderson Ultimate Fifth Wheel Connection.
https://ftknoxlocks.com/shop/ols/pro...onnection-lock
New cost is $189 (on sale). My price for used is $110 plus shipping or $90 if purchased with the hitch listed in a separate post.
Note: the puck lock is not included but they are widely variable in a variety of security levels (get a good one).
I’m only selling mine because my new truck has a goose ball and I’m switching to a Demco Recon hitch. I have ordered a Ft Knox king pin lock (for $129).