The Drive Medical Universal Walker Wheels with Rear Glides comes with caster wheels and two sets of rear glides. The rubber wheels allow most walkers to roll easily and smoothly over irregular surfaces, and the rear glide caps with covers allow for use on all surface.Features Converts folding walker into wheeled walker Allows for 8 height adjustments Rubber wheel allows walker to roll easily and smoothly over irregular surfaces Includes rear glide caps, (item #10107) and glide covers (item #10107C) allowing use on all surfaces No Assembly Required Tool Free Installation Universal Size Requires Prescription: No Hygienic Product: No Not Made With Natural Rubber Latex Specification Actual Product Weight: 1.64 lbs Casters: 5" Height Adjustments: 8 Overall Product Height: 3.1" Overall Product Length: 13.1" Overall Product Width: 4.8" Primary Product Color: Gray Primary Product Material: Rubber Product Weight Capacity: 350 lbs