Fitment and Precautions This product is compatible with all Quad Lock 360 series BASE and ARM (arms). In addition, it is compatible with the following Quad Lock mounts (available as aftermarket parts) Motorcycle Handlebar Mount Motorcycle Mirror Mount Motorcycle Fork Stem Mount Motorcycle Ball Adapter Strap Mount and various removable head parts Mount Quad Lock 360 are for Boating, Kayaking, Flight, Music, Outdoor, Snowmobile, Off-Road Activities. A new choice for Quad Lock users to build mounts to fit their lifestyle with over 200 pattern combinations. You can choose from 2 different combinations of Quad Lock 360 (Head) + ARM + BASE (Base) or HEAD + BASE (Head) excluding ARM. Each part comes with multiple options so you can mix and match the parts that fit right where you want to install.