ART Lock Jack Sport. It is an efficient and easy to use device for ascent and descent in treeclimbing. It offers every climber beginner or pro level, a safe, positive and energy saving climbing experience. Equipped with the ART Swivel the LockJack compensates twists of rope and body alike and thus raises the climbing comfort considerably.
Features:

• Compact and light
• No need to manually advance hitch
• Eliminates rope-on-rope friction
• No knot tying or untying
• Easy to use - allows user to master ascending and descending quickly
• More responsive than other doubled rope connections
• Reduces energy required to climb
• Frictionless when descending swiftly - does not melt knots

Specifications: Rope diameter: 11-13mm Certification: EN 358