Although it is inexpensive, the size and design of the mirror itself and the condition of the mirror (glass) are good. However, the material of the rubber stopper for installation is fragile, and when you try to twist it into the steering wheel, the tattered rust and kernel come out and it will be considerably scraped. The more you try to twist it, the more it gets rubbed and repeating the repetition will be stupid. Also, because the adjustment range of the neck angle is narrow, you can not set the angle to be usable unless the handle is straight. It is also a problem that the angle easily deviates due to vibration. The mirror will not be fixed unless you push the rubber plug of the previous thing to the neck and neck. In other words, it is a product that has a problem in the fixing method. I diverted various junk parts and mounted a mirror on my bicycle. I think that it is very good shopping as a parts material.