Compatibility: Specifically designed for RoyalBaby kids' bicycles, compatible with 12, 14, 16, and 18-inch models. Suitable for most children’s bikes with similar rear axle setups. Material: High-strength steel with durable plastic wheels Color: Black or White (wheel) with a White or Black support bracket Features: Sturdy Construction: The support brackets are made from high-strength steel, providing stability and support to help young riders build confidence as they learn to balance. Durable Wheels: The wheels are crafted from tough plastic, designed to withstand regular use and resist wear and tear, ensuring a smooth ride on various surfaces. Adjustable Height: The training wheels can be adjusted to different heights as your child progresses, allowing for gradual learning and reducing reliance on the wheels over time. Easy Installation: The training wheels are easy to attach to the rear axle of the bike. Quiet Operation: The wheels are designed to roll quietly, minimizing noise while your child rides. Package Includes: 2 x Training Wheels (Left and Right) 1 x Set of Mounting Hardware Installation Note: Ensure the training wheels are securely attached and properly aligned with the rear wheel. Adjust the height according to your child’s skill level. Safety Note: Regularly check the training wheels for any signs of wear or looseness, and adjust them as your child’s riding skills improve to encourage balance and independence. Ideal For: Parents seeking a reliable and sturdy set of training wheels to help their child learn to ride a bike with confidence and safety.