Key to fit Yakima SKS (Single Key System), cut to your specified code. When you purchase, include a note as to which key code you want. I can cut different codes on each side of the key - this means you can have a single key that will open two different locks by flipping the key over. You can also set the key to open a code on one side and be a control key on the other. The control key (uncut) will remove an unlocked core.