Weight Distribution Short arm style trunnion hitch. Curt Manufacturing model 17332, 10,000 lbs / 1000 lb bars. 2" shank and 2 5/16" ball. Used since 2012 I think, but aside from being nice and greasy, good condition.
Can be set for drop or rise. Currently about right for an F150.
Pic of box is for reference. That box is shredded and will be recycled.
This hitch is $500 new. Selling for $280.