Usage Tips:1. Stainless Steel Structure: Made of high strength stainless steel, this boat bow roller is super sturdy and wear resistant, not easy to deform, ensuring long term use. 2. Easy Installation: The universal boat bow roller holder is easy to install on most bows, saving you time and effort, and making it a great choice for you. 3. Excellent Protective Function: The black bow roller design prevents chafing of the rope, protecting the boat and ensuring a smooth sailing experience. 4. Universal Application: Suitable for boats and yachts, this docking bow roller this stainless steel bow roller can be securely and stably attached to your boat, saving time and labour to install. Nylon roller suitable for anchor chain. Roller size: 42x63mm Installation aperture: 10 mm Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:As Shown Material:stainless steel Package Contents: 1 * Marine Docking Bow Roller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.