Question:
What size is the mounting bolt head? What size in inches hopefully socket head to fit?
asked by: Douglas K
Helpful Expert Reply:
You will need a 19mm socket with a 10" extension to tighten the 4 1.25" bolts on the Curt hitch item # C12221. I have linked a couple installation videos to help you with anymore questions you may have.
Curt Trailer Hitch Receiver - Custom Fit - Class II - 1-1/4"