The Extended Height 5" Walker Wheels and Legs Combo Pack is necessary if you need to raise the height of your walker beyond the standard maximum height, and have the mobility to use a walker with wheels. These leg extensions increase your comfort or make it possible to use a walker if you are too tall for the standard height. Allows for height adjustments from 36" to 43" (Adds 4" to height of walker)|5" rubber wheels allow walker to roll easily and smoothly over irregular surfaces|For use with all Drive and most leading manufacturers' walkers|Includes rear glide caps and glide covers allowing use on all surfaces|350 lb Weight Limit