The LYKKE Umber 9cm (3.5") Interchangeable Needle Set is an integral part of my kit bag, and I love it. I use it as has my hat knitting kit using the cords for 40cm (16"). I'm a big hat knitter, so this is a well-used and loved set. Not limited to just hats, it's great for other projects that call for longer cords. Named after the Norwegian word for happiness, LYKKE combines high-quality materials and thoughtful design to produce beautiful, durable, happy-making needles. Made of birchwood, they're soft and warm to the touch and smooth on the yarn. The 9cm (3.5") interchangeable set comes with 9 pairs of needles: 3.25mm - US 3 3.50mm - US 4 3.75mm - US 5 4.00mm - US 6 4.50mm - US 7 5.00mm - US 8 5.50mm - US 9 6.00mm - US 10 6.50mm - US 10.5 The 7mm (US 10.75) needles are not included in the set; they're available to purchase separately. Also included are the following: 2 cords for 40cm (16") 1 cord for 50cm (20") 1 cord for 60cm (24") 2 connectors 4 keys 8 stoppers Click here for the complete range of LYKKE Umber at The Needle Store. Check out our 'LYKKE Interchangeable Needles - Sizes Explained' article if you need help with cord and needle length definitions.