A good bicycle assistant: Our bicycle training wheels are specially designed for beginners who want to learn to ride a bicycle. It can eliminate the fear of wrestling while learning to ride and increase children's confidence in learning to ride. Strong support arm: Our support arm is made of high quality metal, which is not easy to rust and corrode. The sturdy triangular frame structure is more stable, more durable than ordinary clamp arms, and is not easy to be damaged, which is very practical. High quality: our bicycle auxiliary wheels are made of high-quality rubber wheels and sturdy metal brackets, which are very wear-resistant and non-slip, which can effectively improve the stability and safety and ensure the safety of children. Easy to install: our bicycle auxiliary wheels provide various accessories. You don't need to buy the accessories separately, just follow the instructions to install and tighten the washers and nuts for safe use. Adjustable Design: Our bicycle auxiliary wheels are adjustable, suitable for 12, 14, 16, 18 and 20 inch bicycles. You can adjust the size according to your child's bike.