These cables are compatible with all Lykke interchangeable needles and hooks.
3.5" tips - 16", 20" and 24" cable lengths.
5" tips - 20", 24", 32", 40", 47" and 60" cable lengths.
However, they are compatible with all other needles and hooks, it will just mean that the cable length will be different due to which needle or hook you apply to it.
Each cable comes complete with a key to fasten it (Please use this to ensure your cable does not become detached!) as well as two stoppers to allow you to leave your project safely on the cable.