Hiya Folks, I’ve got 2 Seat roundy roundy assemblies , both very strong, well made, and in great condition - 1 is a ‘2’ seater on a 4 bolt on flat base ( I’ve used this one on flatbed Dollie’s as well as crane arms ) the other is a ‘3’ seater on a Mitchell Crown lock set up. They are just sitting in my garage so make n offer n I’ll post em out to you.