If you're looking for a more modern wheel chock that helps alleviate rocking while securing the tire, and if you love the color yellow, then you will be thrilled with the Camco Wheel Stop. Not only do they provide the security of knowing you won't roll away, but their design helps lessen the shaking we rvers are accustomed to, when walking down the rv hallway.
They are for use on rvs that have double axles, sliding between the two tires. If you only have one axle, well, they just won't work (sorry!). They come in two sizes, small and large. Either size is designed for tire diameters of 16-20 inches. The difference between the sizes is the space between the tires. Small is for distances of 1 1/2 to 3 1/2 inches, large is for 3 1/2 to 5 1/2 inches.
The reviews are in and happy campers everywhere have nothing but good things to say about these great wheel stops. Doing much more than a chock does, you will love getting stabilization as a bonus!
Make sure you order two - for extra security and stability. You'll love 'em!!