Instead of fumbling through many different keys for your Yakima® products, use the Yakima® SKS Lock Cores. This same key system allows you to use the same keys for different products. This avoids the hassle of having to look for different keys all of the time. All you need is one key when using the Yakima® SKS Lock Cores. Features: Fits all lockable accessories Includes 4 SKS cores and matching key Included key fits everything in pack