Large load capacity: Made of aluminum alloy, surface powder-coated, 1200-pound winch with maximum safe load of 300 kg/662 pounds, providing entry or fall protection in limited spaces (such as wells, sewers, tunnels and other places). Self-locking system and anti-fall device: Equipped with 1200LBS winch device. The winch unit has a built-in steel cable and is 65.6 feet (20m) long. The steel cable needs to be retracted manually. When the descending speed suddenly accelerates, it will automatically lock to protect personal safety. Adjustable Support Rod: The support rod of this tripod winch kit is telescopically adjustable. Adjustable height range: 4.4-8ft. Aluminum Alloy Material: Our rescue tripod is made of high-strength aluminum alloy, sturdy and resistent . Yellow and black reflective stickers can improve visibility and have a stronger warning effect. This lifting and rescue equipment is ideal for use in wells, sewers, underground pipes and tunnels.