Ulisem Pool Salt Tester, 5-in-1 Digital Seawater Salt Tester, Waterproof Test Kit

The pulleys are made of high-quality 304 stainless steel, which offers high hardness, stability, and durability, and effectively prevents rust and oxidation. The unique 360-degree rotating design effectively prevents rope tangling and is easy to use. The smooth roller ensures strong rope tension. The pulley assembly is securely installed, and the internal space is equipped with seals to effectively prevent noise problems caused by metal-on-metal collisions. The M20 roller measures 73 x 25 mm and is suitable for ropes up to 8 mm in diameter. The maximum load capacity of a single roller is 75 kg, providing a high load-bearing capacity. Suitable for use with backpack pulleys, keychains, chains, ropes, camping, hiking, fishing, pets, and indoor and outdoor equipment.