Self-locking winch: The manual winch adopts a self-locking device for lifting and lowering to ensure safety. The continuous efficiency of the manual winch is 8:1. (1200LBS winch - diameter: 4mm; length: 20m. 1800LBS winch - diameter: 5mm; length: 25m. 2600LBS winch - diameter: 6mm; length: 30m.) Aluminum Alloy Structure: Made of high-strength lightweight aluminum alloy, the top plate is processed by die-casting technology, the tripod rescue kit is sturdy and durable. Yellow and black reflective stickers can improve visibility. The safety factor is greater than 10. Strong carrying capacity: 1200LBS winch safe load 200KG/440LBS, 1800LBS winch safe load 250KG/550LBS, 2600LBS winch safe load 300KG/660LBS; manual handle force: ≤500N. Our products can provide scientific and safe rescue to ensure the safety of users. Adjustable Legs and Tripod The legs of this rescue tripod can be adjusted in length from 1.34-2.14m/4.4-7ft and are kept stable by a ring-shaped protection chain. The aluminum alloy tripod can also be adjusted to adapt to different slopes and uneven ground. Versatile Essential Rescue Equipment: This tripod rescue system is an ideal tool for all types of terrain, uneven coastlines and narrow spaces that rescuers may encounter, providing safe passage and emergency outdoor/fire rescue, perfect for use in deep wells, sewers, underground pipes and tunnels.