The μCycle Training Wheels for Kids Bike are universal and highly compatible with most bikes. It's suitable for bicycles with 12, 14, 16 , 18 and 20 inch wheels. These bicycle training accessories come in a variety of colors such as black, blue, pink wheels with black bracket, pink wheels with white bracket, red, and white. Enjoy high-quality training wheels with a reinforced steel support bar that resists bending. Use a strong, supporting kids wheel bike while your child learns how to ride. Get extra strength support with the steel clips, suitable for larger bikes. When locked in, they keep the training wheels upright and balanced. For smaller bikes, the original stop blocks can be used. Rubber training wheels give a high-quality experience when navigating bumpy pavement, making for a smooth learning experience. μCycle Training Wheels come with detailed, easy-to-follow instructions on how to set up and install the training wheels to your child's bike. Pictures and helpful tips make for an easy, quick installation.