Description: Including: 2 stainless steel pulleys, 4 stainless steel self tapping screws, 2 nylon C type buckles, which can be used for 4 to 6mm/0.16 to 0.24inch ropes Mainly used in leisure boat rope storage, anti wear. Can attach your accessories to kayaks, etc. Lightweight and easy to install, it can be used to grab paddles, poles, nets or other items that need to be secured on the boat Perfect for kayaks, cruise boats, surfboards, sailboats, canoes, boats, marine equipment and anywhere else you need it Perfect for long trips, adding lots of storage space to your boat Specification: Material: stainless steel, nylon Size: Approx. Roller skating: 6x1cm/2.36x0.39inch Turning wheel: 25x6mm/0.98x0.24inch C button length: 46mm/1.81inch Hole distance: 35mm/1.38inch Package Includes: 2 Pieces Pulleys 2 Pieces Buckles 4 Pieces Screws Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!