Aluminum Crochet Hook Set F-K, SilvalumeThis Susan Bates Silvalume Crochet Hook Set offers the most expansive range of sizes in the Susan Bates lineup. Crafted using lightweight aluminum, each hook has gone through a special anodizing process to remove any surface impurities, been heat treated for strength, and buffed for a velvety smooth finish. For easy identification, each size is color coded. Moreover, the iconic in line head design reduces wrist motion and assists in consistent gauge