Replaces the old school zap strap system with stainless steel. Never used because it didn’t fit my windlass system on my boat. My loss is your gain. Check out the website at https://anchorsaver.com/ It’s a pretty cool system. I ordered from the states a couple months ago and with the extra pins it cost me $300. Good for boats up to 40ft. I will remove the listing as soon as it sells so if you see it I still have it. Available for pickup in sooke. Email any questions.