<b>How to install bike training wheels?</b><br> -Step 1: Connecting the training wheel and support bar together. First assemble the bolt, wheel, gasket, bracket arm and nut in order and then fix them by wrench. <br> -Step 2: Unscrew the bicycle rear axle nut, then fix the stop block, fasten the pointed horn of stop block on the bike frame. <br> -Step 3: According the size of bike or wheel, choose the proper hole location on the support bar. Fix them with nut by slightly press strength. <br> -Step 4: Using the same way to install the training wheel of the other side. In order to install it smoothly, please screw in press strength.<br><br> <b>Feature:</b><br> - Give them the best start to gain their balance and confidence on two wheels with this pair of universal fitting training wheels.<br> -Suitable for most 12 to 20 inch children's bicycles, 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)<br> - Durable and sturdy, 2.5cm Wide rubber tire for extra stability and safety.<br> - Excellent quality training wheels at a great price. <br> - Robust metal components and construction.<br> - Comes with all fixtures and fittings, easy DIY assembly.<br><br> <b>Specification:</b><br> -Material: Steel + Plastics + Rubber<br> -Color: Black<br> -Size:<br> Wheel: 4.33 inch*4.33 inch*0.98 inch /11cm *11cm*2.5cm<br> Bracket Arms: 10 inch*1.1 inch / 25.4cm*2.8cm<br> -Fit: 12/ 14/ 16/ 18/ 20 inch Bicycles<br><br> <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.</b><br><br> <b>Package Includes:</b><br> 2 Wheels<br> 2 Bracket Arms<br> 2 Shoulder Bolts<br> 2 Locking Nuts<br> 2 Stop Blocks<br> 2 Gaskets<br>