susan bates silvalume crochet hook set. 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. our famous in line head helps reduce wrist motion for fatigue free crocheting and helps you maintain a more consistent gauge. the 7×3 1 2×1 4in vinyl case is perfect to store your hooks safely. this set includes sizes us f5 g6 h8 i9 j10 and k10.5 3.75mm 4mm 5mm 5.5mm 6mm and 6.5mm. imported.