The Quad Lock Fork Stem Mounts are designed for motorcycles that require mounting in the tube of the fork stem. Both Quad Lock Fork Stem Mounts are compatible with all Quad Lock Cases and the Quad Lock Universal Adaptor. Strong and Secure: The patented dual-stage locking mechanism ensures that your smartphone will stay strong and secure as you ride. Quick and Easy To Attach / Detach: No fumbling with tricky grips. Use one hand to quickly attach and detach your smartphone from either of the Quad Lock Fork Stem Mounts. Optimal Viewing Angle: Use the provided Allen (Hex) Key to set the optimal height and viewing angle. Tech Specs: Fork Stem Mount: Compatible will all Quad Lock Cases and the Universal Adaptor. Made from tough glass filled nylon.