1UPGRADE PART: Standard hole diameter, compatible with most walkers, transform the walker into a rolling walker, help the elderly walk more easily and with less effort. 2FLEXIBLE WHEELS: Double plastic wheels, suitable for tile, concrete, wood, carpet and other road surfaces, will not leave marks and will not scratch the floor. 3ADJUSTABLE HEIGHT: Walker wheels with adjustable height, 5 gears of height adjustable to meet different needs, with locking fixed hole diameter. 4BRAKEABLE: Press the armrest, the center foot tube of the rear wheel can be slowed down and braked when it hits the ground, brakeable and safer. 5EASY TO INSTALL: A total of 2pcs walker wheels are included, easy to install, no extra tools needed, just remove the lower part of the leg of the walker and install this wheel. 6STABLE AND DURABLE: This walker caster wheel is made of premium aluminum alloy legs, sturdy and durable, no deformation, strong load bearing capacity.