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Yakima SKS Lock Cores (Set of 6): The Yakima SKS (Same Key System) Lock Cores enable you to lock all of your Yakima products with just one key. Buy what you need, but anticipate growth.
Fits all Yakima lockable accessories
Included key fits everything in pack
Includes 6 SKS cores and matching key
Dimensions - about 5/8” x 7/8