Brand New Silvalume Aluminum Double-End Crochet Hook 10""-Size H8/5mm Brand New Brand New Silvalume Aluminum Double-End Crochet Hook 10""-Size H8/5mm Brand New SUSAN BATES-Silvalume Crochet Hooks These hooks have the broadest size range within the Susan Bates family of hooks Made of lightweight aluminum, each Silvalume hook undergoes a special anodizing process that etches away all surface impurities In addition, each hook is heat treated for strength and durability and polished for a velvety smooth finish