Features: The pulley is made of 316 stainless steel with strong structure, anti-rust, wear-resistant, high temperature-resistant, moisture-proof. It can be used continuously without fear of damage. Rotation cylinder for head is solid, 360 degrees rotation to prevent rope from knotting, smooth turning wheel. You can quickly combine single pulley block and spring snap hook. Delicate technology, solid design, durable and wear-proof, strong load-bearing, swiveling flexibly. Fixed top for ease of rope handling, smooth roller provides great rope，you can save effort can change direction. Widely used in effort of steel wire rope or other rope tools, such as rope suspension traction in indoor and outdoor applications: camping, hiking, fishing, equipment gear, fitness, hanging wheel, mountaineering, etc. Specifications: Material:Stainless Steel Type:M25(25mm) Maximum load: 50 kg/110lbs Suitable for: sea kayaks, canoes, boats, etc. Net Weight:90g Package Includes: 5x Single Pulley Block note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.