The new universal devicegps holder can be fitted to any x series f series and z series model details fully adjustable for different devices via 4 rotating claws adjustable for viewing angle quick release mechanismfittingx series fitted via a new adaptor that will fit to either side of the handle of your trolley f series fits to a new part that attaches to the underside of the f1 handle r series push fits to any of the accessory points on the r series handlez3 push fits to any of the a