Purpose and reliability: These pulleys are designed for rescue operations, tower work, ski patrol, and any system that requires a blocking devi. They are built for durability and reliability in demanding situations. Efficient and smooth operation: Large pulleys with ball bearings provide higher efficiency and smoother operation, reducing friction and improving performance. Easy installation and removal: The swinging side design allows quick and effortless installation and removal of the rope, saving time during setup and dismantling. Construction and strength: Made of aluminum alloy, the pulleys are lightweight yet robust. They can withstand loads and have a closed strength of up to 20KN (2000kg), ensuring reliable performance in demanding environments. Key benefits at a glance: reliable in harsh conditions, smooth and efficient rope handling, fast rope setup and takedown, strong yet lightweight construction with load capacity. Specifications to note: material is aluminum alloy; large pulleys with ball bearings; swinging side design for rope handling; closed strength up to 20KN (2000kg). Use scenarios: Rescue operations: supports ropebased rescue systems requiring reliable pulleys. Tower work: suitable for maintenance and construction tasks where rope systems are used. Ski patrol: applicable to mountain rescue and related rope systems in alpine environments.