Now in Bamboo like your favorite Natura needles! The addiClick Bamboo Crochet Hook set is intended as an upgrade or "booster pack" to the existing Click sets. Each travel pouch contains 8 addi® hooks: 3.5 mm (US E), 4.0 mm (US F), 4.5 mm (US G), 5.0 mm (US H), 5.5 mm (US I), 6.0 mm (US J), 7.0 mm (US K), and 8.0 mm (US L).