【Wide Applications】This single rescue pulley is a great choice for anyone who needs high-quality pulleys for mountain rescue, tower work, ski patrol, or anyone who needs a pulley and tackle system. 【Bearable Strength】Still Tension: 28KN; Rolling Tension: 14KN, for pulling big loads, big pulleys are better and easier. This single pulley achieves great durability to meet your different needs. 【More Efficient Connection】The upper and lower holes can be connected to a hook or rope. Concave pulleys and polished finish, 360° rotating side panels for quick rope installation and removal. 【High Quality and Durability】The micro pulley is the core of a good climbing system. Made of aluminum-magnesium alloy, forged process, anti-oxidation. Please check periodically for safety and double-check before each use. 【Assembled Traction System】The black pulley is installed with ball bearings, frictionless, with higher efficiency, stability and smoothness. The pulley also helps to reverse the direction of