A. This is a pack of bike training wheels products. They are made of high strength material, UV resistant to avoid fading of the product. The supporting wheels are sturdy and adjustable, providing the necessary safety and stability. It can help your child start with two-wheel balance and confidence. B. Color: Blue. C. Material: Steel and PVC. D. Size: 11 x 11 x 2.2 cm./4.33x4.33x0.87Inches E. Made of environmentally friendly high strength material, wear resistant to avoid fading of the product. F. The auxiliary wheel can produce flashing light when the bike is riding. G. Serving for long lasting life. Suitable for most kind of child bikes. H. The supporting wheels are sturdy and adjustable, providing the necessary safety and stability. I. Unique designed can help your child start with two-wheel balance and confidence. J. Packing list: 1 x Pair of Bike Training Wheels 2 x 12 Inch Bracket