Size:8Inch (Pack of 2) 8 Inch Durable solid wheelchair caster wheel replacement compatible with most manual wheelchairs on the market. MADE TO LAST:Each wheel is made from a strong, durable material made to perform under constant, intense pressure and won't crack, go flat or scuff over time. EASY TO ATTACH: With all hardware included, you can easily attach to most walkers and rollators. VERSATILE USE:Apply in wheelchairs, Rollators, Walkers and more. MATERIAL:PU environmentally friendly replacement tire,non-slip and wear resistant. Metal bead bearing,durable and long lasting. PACKAGE:Wheelchair wheel with hardware Kit If you have any questions, please contact us. We will reply within 24 hours as soon as possible.