Skis for medical walkers

Designed to replace the "tennis ball" covers for the rear rubber feet on front wheeled walkers. The "tennis balls" were put on so that it can be slid instead of having to be lifted to move but they wear out fairly quickly. The tubes on the walkers that I have access to have two different size tubes so that is why there are two different skis. The two sizes can occur on the same walker so be aware that you may need one of each. I put the identifying letter on the skis so that they can be selecte