The ZIGZAG is a mechanical Prusik device specifically designed for arborists and tree-care professionals, offering intuitive operation by replicating the handling of a traditional Prusik pulley system. Its friction chain provides smooth, precise and efficient movement through the tree canopy, while the release lever allows accurate and progressive control during positioning. The large pulley mounted on sealed ball bearings ensures smooth slack tending and efficient movement from branch to branch. Movement speed can be easily adjusted by varying the pressure applied to the release lever. When the friction chain is engaged, the device automatically locks onto the rope for enhanced safety. Highly versatile, the ZIGZAG can be used on both doubled-rope systems and single-rope systems when combined with the CHICANE accessory, which provides additional friction for descents. The upper attachment point accommodates either the return rope or the CHICANE, while an additional attachment point allows connection of a ZILLON lanyard or a secondary system. Its durable steel construction and widely spaced curved side plates provide excellent resistance to wear and long-term durability. Compatible with EN 1891 Type A semi-static ropes from 11.5 to 13 mm, the ZIGZAG weighs 365 g and supports loads up to 140 kg for a single user and 200 kg in certain rescue configurations. Available at La Corderie in Ixelles, Belgium.