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