There are no tools required because it's easy to install. Once attached, its position does not drift and holds steady even while travelling down a bumpy road.
This bicycle mirror has a 360 horizontal rotation, 90 degrees counterclockwise or clockwise rotation to help you watch every direction of your back. It can give you a "heads up" as far as overtaking traffic from behind at a glance.
The mirror length is 8 cm and suitable for mountain bike handlebar with a diameter of 15-35mm with ABS material mirror and silicone rubber belt.
