Quad Lock Fork Stem Mount PRO´s patented two-stage locking system ensures that your phone is securely attached to the motorcycle. The mount is made of black anodized CNC machined aluminum. For additional protection of the smartphone, it is possible to add an anti-vibration damper (recommended). The mount is compatible with all Quad Lock phone cases and universal adapters (not included). Suitable for pipes with an inner diameter of 12.4-25.4 mm. The mount also has discreet cable routing for USB charger cables.