Well, it looks like an adjustable height model. And, it's got the small ball offset to the side for a friction type sway adjuster. So, it's not a Reese Dual Cam, and it's not an Equal-I-Zer, and it's certainly not a Hensley Arrow. It might be a cheaper Reese.
Most of them only have one bolt holding the ball on, so no worries there. But most of these adjustable types have two bolts holding the "ball frame" to the "plug in part". AKA you can slide the ball up and down on the hitch vertical portion but two bolts hold it together.