Feature: 1. UPGRADE 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. 2. FLEXIBLE WHEELS: Double plastic wheels, suitable for tile, concrete, wood, carpet and other road surfaces, will not leave marks and will not scratch the floor. 3. ADJUSTABLE HEIGHT: Walker wheels with adjustable height, 5 gears of height adjustable to meet different needs, with locking fixed hole diameter. 4. BRAKEABLE: 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. 5. EASY 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. 6. STABLE AND DURABLE: This walker caster wheel is made of premium aluminum alloy legs, sturdy and durable, no deformation, strong load bearing capacity. Specification: Item Type: Walker Wheels Material: Aluminum Alloy, Plastic Product Size: Wheel leg inner diameter: Approx. 2.5cm/0.98in, suitable for chair leg outer diameter less than 2.5cm walker applicable Product Use: Can be installed on the front leg of the elderly four legged walker, to realize the wheel leg interchangeable, to help the elderly walk more easily. Wheels with brakes for safety and security. Brake Principle: Press the armrest, the rear wheel center foot tube on the ground to decelerate and brake, safer. Features: 5 gears height adjustment, aluminum alloy wheel legs, plastic wheels Package List: 2 x Walker Wheels Note: Manual measurement, please allow some errors.