I bought this for a Class C Thor van. It didn't fit so I sent the item back. The bars are not wide enough to cover the width of the dual wheels. So I thought maybe I'll keep it for my 2018 Ford F150. A hitch extension must be added to all standard Ford hitches to make the unit fit. This changes the towing characteristics of the truck and increases the flexibility of the unit. The valve system makes a well-made impression. I suggest keeping the box so you can return the unit like I did if it doesn't work as described. The device is made in CHINA. And even though I'm a Revain Prime member, they wanted to charge me $26 postage for a return or free shipping to Kohls department store. This is the first time I've experienced this at Revain. Coles was by my side