COATS&CLARK-Susan Bates Premium Quality Quicksilver Crochet Hooks. These hooks are a soft grey color; which is the result of a special heat treated aluminum alloy. This treatment gives Quicksilver hooks a smooth glasslike finish for effortless crocheting. Our famous in line head helps reduce wrist motion for fatigue free crocheting and helps you maintain a more consistent gauge. The Quicksilver 7x1x1/4in vinyl pouch can be used for storage. These 5-1/2in hooks are available in sizes B1 to K10.5 (1.25mm to 6.5mm): each sold separately. Imported.