【High Efficiency】: Stainless steel ball bearing, with self-lubricating bushing, no friction stuck, more stable and convenient to use. The 360° rotating side panels allow for quick rope installation and removal, improving efficiency. 【Excellent Performance】: Made of Aluminum-magnesium alloy material & forging process. Oxidation resistance & Durable. Breaking strength: 30kN (6750lbs), Size: 4.88 in x 3.26 in, Weight: 0.55lb. Lightweight and easy to carry. 【Rope-Friendly】: Rope MAX ≤ Φ16 mm(Max). High strength torsion resistance, prolong the life of the rope. Large load, large traction, can meet your more needs. 【Wide Application】: Suitable for mountaineering, rock climbing, ice climbing, expansion, cave, rescue, aerial work, training etc. SEPEAK pulley can also be used for backyard zipline/ swing seats. Multiple uses make your life more convenient and safe! 【What You Get】: 1pc SEPEAK Blue Pulley. If you have any question, please contact us. S.E.PEAK 30kN Large Rescue Climbing Pulley Sheave with Swing Plate, CE Certified Portable Outdoor Pulley for Backyard Zipline,Climbing&Rock Rescue Lifting, Fits Rope up to 16 mm/Holds Up to 6750lbs, blue