Features 1、SOLID REPLACEMENT WHEEL: The tire part is made of polyurethane material, bearing type is 6001, the wheel is strong and explosion proof, no inflation, strong and long lasting 2、NON SLIP AND STABLE: Tire surface texture is non slip and wear resistant, non slip effect is good, possess high safety factor, suitable for all kinds of road surface, possess stable performance 3、WIDELY USED: Wheelchair caster use professional design and accurate manufacturing process, mainly used in wheelchairs, driving aids, walkers and so on 4、RELIABLE MATERIAL: Wheelchair caster wheel is made of PU polyurethane, rustproof and long lasting wheel hub, possess strong bearing capacity 5、12IN WHEEL: The wheel is 12 inches in outer diameter, with a 12mm center aperture, suitable for easy installation and use on various mobility devices Specification Item Type: Wheelchair Caster<br> Material: PU<br> Wheel Diameter: Approx. 30.48cm / 12in<br> Center Hole Diameter: Approx. 12mm / 0.47in<br> Color: Gray<br> Package List 1 x Wheelchair Caster<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store