【Premium Material】Single pulley roller made of 304 stainless steel, very strong, rust-resistant, wear-resistant and corrosion-resistant, with a very strong structure. Can support a load of up to 400 kg. 【Bear Load】 This heavy duty pulley can support a load of up to 400 kg / 88 kg. 【360 Degree Swivel Ring】 M50 single pulley block with smooth rotating wheel, 360 degree rotation to prevent ropes/cables/wires from tangling for convenient use. 【Size - Stainless Steel Wheel】 2'' / 50mm x 0.6'' / 15mm (D x L), Eye Diameter: 20mm /0.79", Total Height: 130mm / 5.12". 【Wide Range of Applications】 The swivel pulleys can be worked with both indoor and outdoor ropes or cords for flexible sliding pulleys. Easy installation for large kayaks, canoes, factories, construction, shipping, mining, household. Perfect for garage, machine loading, dog pulley system etc.