Applicable rope: 12-16mm rope, with a round hole to connect the hanging point, ABS guide wheel, smooth rolling, no rope grinding, it is recommended to use high-strength polyester rope Falling lock: in the locked state, it can only slide up in one direction. If it falls accidentally, it will automatically lock and prevent the descent. Anti-reversal design, if the rope is in the wrong direction, it will get stuck and cannot be closed. Reinforced design: 5 pieces of uneven alloy blocking teeth to better grip the rope. Enhance the reverse grip with the help of pull-down gravity, making the fall locking effect more significant (note: pay attention to the direction when installing the rope) Reinforced material: Reinforced alloy steel material, wear-resistant and corrosion-resistant. Add a push-type safety device to prevent the nut from accidentally falling off Applicable: high-altitude operations, engineering protection, power construction, fire rescue. Complies with ANSI Z359.15 standard This is a safe anti-fall ascender, applicable to ropes ranging from 10-18mm It is suitable for extended operations such as high-altitude operations/engineering protection/electrical construction/exterior wall operations, etc. It also has a round hole connection. For safety reasons, you must be equipped with such an anti-fall tool when working at heights