【Premium Material】Made of 304 stainless steel, rust-proof and wear-resistant with solid structure, manufactured by strict process, reliable and durable. 【360 Degree Flexible Swivel】360 degree swivel top ring for easy rope handling, prevent rope knotting, easy to use, smooth roller provides excellent rope traversing. 【Small Size & Large Capacity】Size: M15; Wheel Diameter: 15mm / 0.59″; Wheel Width: 6mm / 0.23″; Rotating Ring Width: 11mm / 0.43″; Total Length: 60mm / 2.36″; Maximum Load: 35kg / 77lbs. What a simple but powerful roller. 【Wide Applications】Flexible sliding pulley with strong load capacity for many applications. Using gravity and skating for lifting, transmission or traction work, designed to be used with rope or cord indoors and outdoors with smooth sliding function. 【Package Included】12pcs x M15 Single Pulley Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the