The light itself is worth 4 stars for brightness and function. The mount is worth 0 stars thus the 2 star rating. The mount is worthless. Throw it away. You must spend at least $10 more to get the optional clamp style mount that should have come stock with the light in the first place. And the rubber inner strip with the clamp mount was too thick for my stock 2010 Specialized Roubaix road handle bar. Thank goodness I had a thin rubber from an old Cateye computer or it would not work. NiteRider, this is unacceptable, Get it together.