Features: 1. Adopted from natural rubber material, the wheel is wear resistant and sturdy for long time use. 2. Includes a pair of front wheels and back wheels, you can choose according your stroller. 3. 360 degree rotation, more easier to operate. 4. Easy to install, convenient to use. 5. Suitable for most brand strollers, such as Baby for Yoyo/ Yoya/Chbaby, Vovo/Kiddopotamus/aiqi/Yuyu/Hugeot/Imengs etc. Specification: Material: rubber+alloy Color: As Pictures Shown Type: 1 Pair Front Wheel, 1 Pair Back Wheel(optional) Wheel Diameter: approx.13cm/5.1in Weight: Approx.785g/27.7oz Package list: 1 * Baby Stroller Wheels Note: Use a hexagonal wrench to unscrew the screws to install. 1. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 3.The product is a special accessory , only applicable for yoyo car or the same model as for yoyo car, not applicable to other models, please pay attention to purchase. And sync to English, published materials. .