The LYKKE Indigo 9cm (3.5") Interchangeable Needle Set is an integral part of my kit bag, and I love it. I tend to 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, of course, it's great for other projects that call for the longer cords. .
The 9cm (3.5") interchangeable set comes with 9 pairs of needles: