Definition:
Interchangeable knitting needles are sets of circular knitting needles with cables that allow different sized knitting needle points to be exchanged and used on a common set of cables.
Interchangeable needles vary in materials used (resin or metal), the mechanism to connect the points to the cable and the sizes that are included in the package.
Choosing an interchangeable needle system is as personal as choosing any other kind of knitting needle, and it's a great idea to try someone else's set before you buy your own so you can find one you like.
The most common brands of interchangeable knitting needles in the United States are:
