Colour Interchangeable Set- 13cm/5" TipsMade of strong birch wood, the Lykke Colour needles are very smooth and light. Each size is a different colour making it easy to find the size you need. All Lykke needles have both metric and US sizes etched on the needles to ensure long term readability. Set contains: 12 pairs of 13 cm 5" needle tips: 3. 5 mm, 3. 75 mm, 4 mm, 4. 5 mm, 5 mm, 5. 5 mm, 6 mm, 6. 5 mm, 8 mm, 9 mm, 10 mm, 12 mm (US 4, 5, 6, 7, 8, 9, 10, 10. 5, 11, 13, 15, 17) 5 cords: 2