The VERTIGO TWIST-LOCK connector is designed for use on progression lanyards. The excellent grip and automatic locking system facilitate handling when passing intermediate anchors. The large opening and the Keylock system allow the connector to be easily connected. VERTIGO TWIST-LOCK may be used with a CAPTIVO positioning bar to promote loading of the carabiner on the major axis, limit the risk of rotation, and to keep it integrated with the device.