The Cycle Star 901/3 from Busch&Muller either plugs into the end of your handlebar, or wraps around the bar, whichever you prefer. The 2" curved arm is best for positioning the mirror just above the brake lever on tweener-style recumbent handlebars. The mirror comes complete with the hardware pictured below. A 55mm, slightly convex lense provides exceptional optics and a wide view of the road behind you. Dual ball-pivots allow full adjustment to get the angle just right!