Garmin bike handlebar mount for almost all Garmin compatible devices, works on Magicshine Allty lights with Garmin base, such as most of the 9 series, Eagle series, Bluetooth series and all Monteer bike lights. Hard plastic base with sturdy straps, a hex key (included) is needed to secure it onto the handlebar, once installed, it's non-adjustable, neither vertically nor horizontally. Two extra straps are included that will work with handlebars of most sizes (up to 41 mm) including Aero bars. This mount can easily support Garmin devices of moderate weight including bike lights, cellphones, GoPro cameras etc.