Susan Bates Crystalites Crochet Hooks are beautifully colored translucent plastic crochet hooks. Each size features its own fun color 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 maintain a more consistent gauge. This set comes in a vinyl case and contains five hooks, in sizes G/6 (4 mm), H/8 (5 mm), I/9 (5.5 mm), J/10 (6 mm) and K/10 1/2 (6.5 mm).