Solid Rubber: The front wheel of the wheelchair is made of PVC rubber, which does not need to be inflated. It is wear-resistant, non-slip and durable. The wheels have a longer life.Strong bearing capacity: 120 (kg) Thickened ABS wheels are safer. Diameter: 15cm/6inch, 17cm/7inch, 19cm/8inch, please pay attention to measure the height and diameterinside of the bearing at the time of purchase.Ball Bearings: Built-in high-quality steel ball bearings, each wheel is equipped with 2 standard bearings, off-road bearing, labor-saving and practical.Simple and Reliable: Replace the front wheel of the wheelchair with good reliability, small size, light weight, beautiful appearance, two colors black/gray, meeting your different needs.Wide range of uses: This mobility aid can be used as a wheel and is widely used in wheelchairs, disabled vehicles, medical vehicles, walking aids, pet vehicles, etc. 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-Minnanxin