content: A great value and looks cool on my bicycle. It comes complete with detailed instructions and the appropriate Allen Wrench. The instructions call for using a knife to cut away the covering at the end of your handle bar. For a much safer installation, use a step-bit and drill.If I were to fault this mirror in any way it would be this: From the photo it appears that the mirror's upright tube is flexible - it is not. Those baffles are just for show.A rear-view mirror is an essential safety tool only following in importance the use of a helmet. I am a teacher and ride my bike over city streets to work every day.