Stainless steel fender lock kit 11575-3 makes hanging or moving fenders quick and easy. The two part kit is easy to install with stainless steel screws or bolts (not included). tie fenders to the key part of the kit then twist into deck plate for secure fenders to the gunwale. No need to untie and retie fenders when moving or Docking; just twist the key for installation or removal. Attwood develops high value, engineered marine products to make life on the water easier to enjoy. Made to meet the demands of boat builders and distribution partners, our products are extensively tested on-site in our lab to provide worry-free boating under all conditions.