OX BLOX ULTRA - 13.5" Trailer Jack Block

They are awesome! I need to purchase a thicker one for the hitch jack!

One month in

Ox Blox are working great for our 49,000 Lb. Class A. They are very stiff, yet lightweight. I love that I can stack them on a basement tray and they don’t slide around. Finally, a compact block that works under full- size coach!

They work great

I am using these on a Class 36 ft motorhome. They are working out great. Love the handle on them to carry them