Description: 【Versatile Usage】: These thickened kids bike training wheels are designed to roll smoothly on various surface, including uneven or bumpy terrains, They are compatible with a wide range of scooters and bikes, such as 2 wheel mini push scooters, 3 wheel scooters, children's walkers, and micro scooters 【Compatibility】: The kids bike training wheels are suitable for children's bicycles of 14", 16" and 20", providing the necessary stability for your child's bike 【Confidence Building】: Ideal for kids learning to ride and building confidence, these wheels provide the necessary balance and support to help them ride smoothly and safely while gradually mastering their skills 【Quality Material】: Made from polyurethane material, ensuring a sturdy structure that can endure regular use while maintaining its functionality over time 【Complete Package】: The set includes two flashing wheels with a diameter of 11.5cm and a complete set of screws for easy installation Specification: Material: Polyurethane   Size Chart: Wheel Diameter 11.5cm/4.53inch Package Includes: 1 Pair of Kids Bicycle Training Wheels 1 Screws Set Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-3mm differences due to manual measurement.