Feature:1. PU Material: The wheel is made of environmentally friendly PU material, non slip and wear resistant, and can be used for a long time.2. Large Load Bearing: The thickness of the wheel hub is 40mm, and the thicker design makes it have strong load bearing capacity.3. 608ZZ Ball Bearing: Using 608ZZ metal ball bearings, the solid wheel runs smoothly and is safer to use.4. 6in Diameter: The wheelchair solid wheel with 6in large diameter ensures quick moving and great stability.5. Multiple Usages: The 5 hole wheel hub is suitable for wheelchairs, rollators, walkers, etc., easy to install and replace.Specification:Item Type: 6in Solid WheelMaterial: PU MaterialDiameter: Approx. 150mm / 6inTire Thickness: Approx. 25mm / 1inWheel Hub Thickness: 40mm / 1.6inBearing Model: 608ZZBearing Hole Diameter: Approx. 8mm / 0.3inBearing Outer Diameter: Approx. 22mm / 0.9inBearing Thickness: Approx. 7mm / 0.3in(There may be small error in manual measurement.).Package List:1 x Wheelchair WheelNote:Please match the appropriate size before use.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.