What better way to secure your bike in the back of your pickup than with a BlockHead? Well, how 'bout with a Locking BlockHead from Yakima? It uses a rugged, 9mm-diameter lockable skewer and anodized aluminum block to hold your bike and secure it at the same time. Bolt the Locking BlockHead to your pickup, RV, or boat (there are hundreds of other mounting possibilities). Yakima SKS (Same Key System) cores and keys are included.