DescriptionSpecial Features : 12x2.125(57-203)Tube and TyreMaterial Type : rubberItem Diameter : 30.5cmItem Weight : 0.5kgItem Height : 4cmItem Width : 30.5cmItem Length : 30.5cmExternal Testing Certification : BQBModel Name : 12x2.125(57-203)Item Type : Tyres12x2.125 (57-203) Tube and tyre, Fits Many Gas Electric Scooters E-Bike Folding Bike Bicycle Child's BicycleDear friends:Hello This is a multi-option link, each option has a corresponding picture and price. Please place an order according to your needs Kind tips:If the order is wrong, please choose not to return If you have any questions about the product model, please contact us before purchasing, we will help you confirm the correct model to avoid mistakes Feature:100% brand new, high quality, easy to installMaterial: Blend of natural and butyl rubberColor: As shown. Due to the light, there may be a little chromatic aberration.Notes1. Please refer to your original tire model to purchase. If you have any questions about tire type, please contact us to avoid buying the wrong tire.2. Due to light and screen differences, the color of the product may be slightly different from the picture.3. Please allow 1-3cm difference due to manual measurement. If you have any questions, please contact us in time.4. If you have any questions, please feel free to contact me, I will reply as soon as possible. thank you wish you a happy life