GM CLIMBING Z Rig Pulley Rope Hauling System Hardware for 2to1 or 3to1 Mechanical Advantage with Process Capture Z-rig, a powerful pulley system, is always an ideal choice for rescue, arborist, any hauling and other more than 100 applications. This kit assembles all hardware for a basic Z-drag set-up. Whatever you want pull a kayak stuck in the stock, haul something up or tensioning a line, Z-rig will definitely help you to complete. Two Pre-sewn prusik loop are attached to create a progress capture. Once you let go of the rope, the device will bite the rope and stop the load. A smart design! Pursik minding pulleys go with it. The pulley provides great smooth rotation and fast speed. Swing plate makes the rope installation and removal easier. Kit includes: 2pcs Micro pulley; 2pcs pre-sewn prusik loop; 2pcs Aluminum Oval Locking Carabiner.