Material: Plastic pole + ABS shell. Silicone rubber base, adjustable, strong and durable.
Size: Mirror diameter: 7.5 cm/2.95inches. Support Length: 6 cm+7.5cm/2.36+2.95inch, suitable for the handlebar of diameter 20mm-22mm/0.79-0.87inch.
Adjustable Support: Base & mirror with 360 degrees full rotation and can be adjusted to any direction to help you watch every direction of your back.
Easy to Install: You can easily tighten it to the handlebars with the small spanner according to the size of the handlebar.
Applications: Suitable for different bikes, such as kids bikes and other types of bicycles with the bicycle handlebar diameter is 20mm-22mm/0.79-0.87inch.