Multiple Utilization: The block and tackle pulley system is an excellent choice for you who need a climbing rope pulley for rock mountain rescue, tower work, training, outdoor activities. Suitable for climbing, downhill, training, and other high-altitude work. Easy To Use: Easier rope installation and removal. You don't need to thread rope from end to end. Much facilitate the set-up progress of rope and pulley system—swing side for easy and rapid rope installation and removal. Double Pulleys With Rope: Our lifting pulley system has passed CE certification, and you can rest assured of use. The double pulley blocks feature high-strength, durability, and smoothness. Durable Material: Two rigging pulleys in the package are durable and anti-rust. Made of forged aluminum and constructed of the premium axle, the braided rope is premium polyester with 11pcs core strands. 7700lbs Breaking Strength: Diameter of our rope is 1/2 in/12 mm, length is 61 m/200 ft. The breaking length of our 12 mm rope is up to 35 kn/7700 lbs, which can meet your different needs to a large extent.