<p><b>Feature:</b></p> <p></p> <p>✔ When young children start to ride a bike,Give them the best start to gain their balance and confidence on two wheels with this pair of universal fitting training wheels.</p> <p>✔ It fits 12, 14, 16, 18 and 20 inch training wheels, the rear axle has a length of more than 1cm as the installation location. (Works only with hub gears, not compatible with the gear shifted bike)</p> <p>✔ Robust metal components and construction,Durable and sturdy 2.8 cm Wide rubber tire for extra stability and safety.It comes with all fixtures and fittings, easy DIY assembly.</p> <p></p> <p><b>How to install bike training wheels? </b></p> <p></p> <p>⇨Step 1: Connecting the training wheel and the support bar together. First assemble the bolt, wheel, bracket arm , gasket and nut in order,and then tighten them with wrench. </p> <p>⇨Step 2: Unscrew the bicycle rear axle nut, then fix the stop block, and fasten the pointed horn of stop block on the bike frame. </p> <p>⇨Step 3: According the size of bike wheel, choose the proper insert size on the support bar. (The training wheels should be 3/8 to 1/2 inch above the ground on both sides when the bike is upright.)Tighten the nut with wrench by applying pressure. </p> <p>⇨Step 4: Follow the same instruction to install the training wheel on the other side of the bike. Please apply pressure to ensure the wheels are screw in tightly for safety purposes. Specification: </p> <p></p> <p>✔ Materials: Steel + Plastic + Rubber </p> <p>✔ Color:Black/Blue </p> <p>✔ Weight: about 700g </p> <p>✔Size: </p> <p>⇨Wheel Diameter: 11.5 cm/ 4.53 inch; Width: 2.85 cm/ 1.12 inch ⇨Suitable For: 12/ 14/ 16/ 18/ 20 inch Bicycles </p> <p></p> <p><b>Note: This product is not suitable for change-speed bicycles. Please check carefully before purchasing to determine if your bicycle is suitable for our products.(Not for Huffy brand bikes.)</b></p>