Wheelchair Wheel Replacement Skidproof Walker Tire for Rollator Feature:1. 16cm Diameter: For wheelchair users, the wheel with 16cm large diameter ensures fast movers with great stability.2. PU material: adopting high quality PU material, the casters are non-slip and wear-resistant when rolling.3. Ball bearing: equipped with metal ball bearing, the tire allows smooth rolling and durable use.4. Thickened hub: the thickened wheel hub is not easy to deform, which also has a strong bearing capacity.5. Wide Application: Perfectly fit for wheelchair, walker, rollator and so on, very easy to install. Specification:Item Type: Wheelchair Wheel Replacement Material: PUM Material Diameter: Approx. 16cm/6.3in Tire Thickness: Approx. 30mm/1.2in Wheel Hub Thickness: 53mm/2.1in Bearing Model: 608zz Bearing Hole Diameter: Approx. 8mm/0.3in Bearing Outer Diameter: Approx. 22mm/0.9in Bearing Thickness: Approx. 7mm/0.30in(There may be a small error in manual measurement.)Package List: 1 x Wheelchair Wheel ReplacementNote: Please adjust the right size before use. 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.