Product Information Brand Lykke Country of Origin India Material Birch Named after the Norwegian word for happiness, LYKKE Crafts combine high quality materials and thoughtful design to produce beautiful, durable, happy-making crochet hooks. The hooks are made of smooth, hard birch with a beautiful grey "driftwood" finish that varies with the wood grain.Indigo14 Tunisian Interchangeable Crochet Hooks Set in Indigo Pouch, 6" / 15 cm Set of 12 Indigo hooks: US E-4 (3.50 mm), US F-5 (3.75 mm), US G-6 (4.0 mm), US 7 (4.5 mm), US H-8 (5.0 mm), US I-9 (5.5 mm), US J-10 (6.0 mm), US K-10.5 (6.5 mm), US L-11 (8.0 mm), US M-13 (9.0 mm), US N-15 (10.0 mm), US P-16 (11.5 mm) in Indigo Pouch Black Cords: 1 cord 21.5" length (54.5 cm) 2 cords 29.5" length (75 cm) 1 cord 37.5" length (95 cm) Accessories: 2 connectors 4 keys 8 stoppers 4 caps in 4 sizes (for using as straight hooks) * Length of hook is measured from the tip to the end of metal once attached.