<br>▸The BS-TOP training wheel is designed for children to learn how to ride. It is an indispensable part of children's bicycle training. <br>▸The unique and innovative smooth anti-slip safety training wheel can make your child relax when riding, don't worry about falling or scratching. <br>▸Universal Diameter and Suitable Sizes - Wheel Diameter: 13 cm/ 5.12 inch; Width: 3 cm/ 1.18 inch; Weight: about 700g. It's suitable for Child's bicycles of 12" 14'' 16'' 18'' 20", however it is not for certain models of HUFFY bicycles.<br>▸The training wheel of child bike is very sturdy and easy to install, it's can help your child learn to ride a bike without difficulties effectively , improving your children safety and confidence.</b> <br>⇨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. <br>⇨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. <br>⇨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. <br>⇨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. <br> <br><b>Specification:</b> <br>✔ Materials: Steel + Plastic + Rubber <br>✔ Color:Black/Blue <br>✔ Weight: about 700g <br>✔Size: <br>⇨Wheel Diameter: 13 cm/ 5.12 inch; Width: 3 cm/ 1.18 inch <br>⇨Suitable For: 12/ 14/ 16/ 18/ 20 inch Bicycles <br> <br><b> Package Includes:</b> <br>2 x Shoulder Bolts <br>2 x Training Wheels <br>2 x Vertical Brackets <br>2 x Washers <br>2 x Locking Nuts <br>2 x Limit Spacer<br>1 x Wrench <br>1 x Bell