The MR-K13 is entirely adjustable so you can position it in the best place for your viewing needs. It has a 180° folding angle and is rotatable by 360°. The mirrors are sold as separate sides so you can choose whether you require a mirror on the left of your handlebars or the right. The MR-K13 is recommended for use with flat handlebars such as those found on hybrid bikes, particularly bars with a diameter between 21-26mm.