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 service life. Strong bearing capacity: 120 (kg) Thickened ABS wheels are safer. - Diameter: 15cm/6inch, 17cm/7inch, 19cm/8inch, please pay attention to measure your height and bearing inner diameter when purchasing. Ball Bearings : Built-in high-quality steel ball bearings, each wheel is equipped with 2 standard bearings, off-road bearing, labor-saving and convenient. Simple and reliable: replace the front wheel of the wheelchair with good reliability, small size, light weight, beautiful appearance, two colors of black/grey, to meet 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 practice vehicles, etc.