The pulleys are made of high-quality 304 stainless steel, which has high hardness, stability, and durability, and can effectively prevent rust and oxidation. The unique 360-degree rotating design effectively prevents the rope from tangling and is easy to use. The soft roller ensures strong rope tension. The pulley assembly is firmly installed, and the internal space is equipped with gaskets to effectively avoid noise problems caused by metal collisions. The M20 roller measures 73 x 25 mm and is suitable for ropes with a diameter of up to 8 mm. The maximum load weight of a single roller is 75 kg, which has a high load capacity. Backpack pulleys, key rings, chains, ropes, camping, hiking, fishing, pets, indoor and outdoor equipment.