Works in conjuction with existing downrigger mounting knobs and padlocks of your choice (Padlocks not included)Suitable for all Scotty tilt-up Electric and Manual DownriggersRugged fiber reinforced engineering grade nylon molded over a robust stainless plate This system provides a degree of protection for your Scotty Downrigger and Swivel Mount. It is not designed to, and will not stop a determined and equipped thief.