Strong Load Capacity: The stainless steel nylon pulley shell is made of stainless steel sheet, flexible sliding pulley with heavy load capacity, safe load capacity is 50 kg. Durable: Who is anti-corrosion and anti-rust, and can be used in seawater or harsher environments. The pulley adopts nylon wheels, which are lightweight, corrosion-resistant and wear-resistant, and not easy to age. 360 Degree Swivel Ring: Single pulley block with smooth rotating wheel, rotating 360 degrees to prevent rope/cable/wire from getting tangled for convenient use. Wide Application: Can be used with rope or cord inside and outside for flexible, easy sliding pulley for installation in large kayaks, canoes, factories, construction, shipping, mining, household. Design: Double-sided silent bearing, no noise. small and compact, easy to carry. It is perfect for garage, machine loading, curtains, clothesline, dog pulley system, etc.