Quad Lock Motorcycle Mirror MountThe Quad Lock Motorcycle Mirror Mount makes it easier than ever to keep your phone secure for the ride and your navigation apps visible so you never miss a turn. Designed to mount securely on standard motorcycle and scooter mirror stems and adjustable for optimum visibility thanks to the indexing head. Patented dual stage locking mechanism makes attaching and detaching your phone from the mount is a easy, simply twist and lock in one motion. An optional Vibration Dampener is available to add to your Quad Lock mount for additional stability and reduces over 90% of high frequency vibrations produced by motorcycles.This revised version features reduced circumference of the base and an improved mounting system for easier, simpler installation. An re-engineeredhinge mechanism also makes installation to the handlebar mount a breeze.Compatible with all Quad Lock cases and Universal Adaptor.Features: Patented dual stage locking mechanism Easy attachment/detachment from phone case Glass filled Nylon construction and stainless steel hardware Optional Quad Lock Vibration Dampener provides additional stability (sold separately) Mirror mount fits 16mm stem Includes 3 spacers to fit stem sizes: 10mm, 12mm, 14mm Includes 1 mirror mount and 3 bar spacers Note:Quad Lock Case sold separately.