Hepco & Becker Lock-it Screw that is used for the Lock-it side carriers. This lock is used in combination with the Lock-it Side Carrier. It simply replaces one of the bolts used previously to attach the side carrier to the mounting frame on the bike. These come with one key. We can match the key to your current set depending on what we have in stock. Please notify us of the 3 digit number you would like the lock keyed to which can be found on your current key.