The Locking Yakima Universal Skewer is a replacement part. The Locking Skewer fits most fork mount bike racks from Yakima, and some other car roof fork mount bike carriers. In order to keep consistancy the skewer is lockable using a Yakima Racks SKS lock core (not included). That way you can have the same key for both your skewer and your racks. Ingenius...
Purchase the Yakima Racks Universal Locking Skewer via a secure server from RockCreek.com.