At RVCampChamp.com we always advice matching up like this:
Blue Ox Tow Bar with Blue Ox Base Plate
Roadmaster Tow Bar with Roadmaster Base Plate
Demco Tow Bar with Demco Base Plate
However, sometimes people like to mix and match tow bar manufacture part for whatever the reason. So, if you have a Blue Ox Tow Bar and find yourself buying a used Honda CRV with a Roadmaster Base Plate already on it.... This is your page to find the adapter you'll need!
Our shipping calculator sometimes goes off a little strong, if you are placing an order under $100 and think the shipping is too high.... Call us for a review and better deal!