i think you need this but i may be wrong.
https://www.amazon.com/CURT-48004-Receiver-Mount-Pintle-Hook/dp/B004QEM784/ref=sr_1_4?crid=12HBJYCAX5MAL&keywords=hitch+with+pincher&qid=1642295551&sprefix=hitch+with+pince%2Caps%2C871&sr=8-4
if hit a bump i think the ball can come off that circle- but im no expert.