Thank you for viewing! ( .ˬ.)" ⭐️ Brand new, unused, and free shipping ⭐️ Immediate purchase available Size: 20 inches Brand: Lovesole Wheel Size: 20 inches Material: Rubber, Plastic, Carbon Steel, Metal Rim Diameter: 20 inches Item Diameter: 12 inches Universal Diameter and Available Sizes: Are you still struggling with the fact that some bicycle training wheels only fit one or two sizes of bicycles? Worry no more! These training wheels with brackets featuring five different holes (diameter: 11CM) are perfect for meeting the needs of installing on 12/14/16/18/20 inch sized bicycles. Their round shape and beautiful appearance perfectly match each other like lollipops, bringing a colorful childhood to children. (Note: Not compatible with variable speed bicycles.) High-Quality Metal, Plastic, and Rubber Materials with Thickened Wheels: Always looking for quiet and wear-resistant bicycle training wheels, especially those that can also play a role in shock absorption? These training wheels meet this requirement, made of high-quality metal, plastic, and rubber materials. The thick wheels reduce bumps, requiring less energy and making the ride more comfortable. Double Bearings and Large Washers: The double high-carbon steel bearings of the training wheels are optimized for less noise and smoother operation, extending the life of the training wheels. In addition, the size of the gasket has been specially enlarged to firmly cover the entire bearing. Therefore, you don't have to worry about the bearings suddenly falling out even after your child has been riding for a while. We designed training wheels with a 20% thicker, 3mm thick bracket, providing stronger support. Therefore, they will not easily deform or break. Your child will be more confident and safer when learning to ride a bicycle! Easy Installation: Easy to install with two wrenches. The locking bracket is an auxiliary tool for securing the bracket and the bicycle. At the same time, when the bicycle is upright, it is recommended to keep the wheels about 5mm off the ground. This makes it easier for your child to grasp the balance while riding.