Item Type: Wheelchair Wheel Material: PU Diameter: Approx. 197mm / 7.8in Tire Thickness: Approx. 23mm / 0.9in Wheel Hub Thickness: 50mm / 2.0in Bearing Model: 608zz Bearing Hole Diameter: Approx. 8mm / 0.3in Bearing Outer Diameter: Approx. 22mm / 0.9in Bearing Thickness: Approx. 7mm / 0.30in Note: There may be small error in manual measurement. 8in Diameter: The wheelchair wheel with 8in large diameter ensures quick moving with great stability. PU Material: Made of premium PU material, the caster is skidproof and wear resistant during rolling. Ball Bearing: Equipped with metal ball bearing, the tire enables smooth rolling and long-lasting durability. Thickened Hub: Reinforced wheel hub is resistant to deformation and offers high load-bearing capacity. Wide Compatibility: Suitable for wheelchairs, walkers, rollators, and other mobility devices. Easy to install. Please ensure proper size matching before use. Package Includes: 1 x Wheelchair Wheel