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. Each size is color coded so you can find the size you need at a glance. These double ended hooks have an extended shaft; which aids in working special stitch techniques. This package contains one 10in hook. Available in a variety of sizes: each sold separately. Imported.