Designed to allow up to 4 users simultaneously, Miller Vi-Go Vertical Cable Climbing System Kits are available with automatic pass-through brackets or manual cable guides. Both secure cable in windy environments to prevent wear. Lifeline tensioner prevents ladder rung deformation and indicates when lifeline is properly tensioned. Both premium and standard cable sleeves move along lifeline, uninterrupted, following user while ascending and descending, and instantly locking in event of fall.