About this item A Must-Have for Beginner Cyclists: Training wheels like ours are essential for beginners. They provide better support, enhance balance and stability, and help reduce collisions and falls while learning to ride Safety Materials & Stability: Our auxiliary training wheel’s outer shell is made from food-grade PVC, which is non-toxic, and wear-resistant—perfect for kids. The wide wheel design ensures more ground contact for stability, while the carbon steel hub offers excellent wear and corrosion resistance. High-quality steel screws and nuts add durability and a secure fit. The 4mm (0.016 inches) thick metal support bracket enhances overall stability and safety. Comprehensive Accessories and Easy Installation: Our bicycle training wheel accessory package includes a pair of training wheels with brackets, two sets of necessary parts, detailed installation instructions, and video tutorials accessible on our website. This ensures effortless and successful installation for your convenience Compatibility Across Multiple Bike Models: Our training wheels are designed to fit bicycles 16″, 18″, 20″, 22″, 24″ bike,catering to various models which with derailleurs. Please note that the training wheels not fit quick-release models. Suitable for a maximum weight capacity of 106 pounds. The training wheels help children learn to ride and are the perfect gift for them Worry-Free After-Sales Support: If you have any questions regarding our products, their usage, or installation methods, please don’t hesitate to contact us. We’re committed to providing you with high-quality service and assistance