The VERTIGO TWIST-LOCK carabiner is designed for use on PROGRESS lanyards. The excellent grip and automatic locking system facilitate handling. The wide opening and the Keylock system allow the carabiner 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, to limit the risk of rotation and to keep it integrated with the device.