Description: Training Wheels, Stable Metal Supports. Easy Installment Individually Adjustable. Suitable For All Bikes From 12 -20" Inch. Material: Plastic / Steel Specifications: Perfect bicycle accessories for those who are not skilled at cycling or afraid of falling. Adopt 5082 high-speed bearing, sturdy and durable, and it can realize height adjustment. Made of premium strong metal material which can bear heavy children without security problems. With all neccesary parts and clear installation instructions, these wheels are easy to install. Cool glowing design when riding, rise kid's interest in learning bicycle. Suitable for 12-20in children bicycle. Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement and etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package Included: 2 x Clispeed Auxiliary Training Wheels