Companion Sets are the perfect addition for the busy Denise Interchangeable stitcher! Or, if you dont think you need a complete knitting or crochet set, the Companion Set is excellent for having a full arsenal of circular needle or Tunisian hook lengths with the addition of a small number of your favorite needle heads or crochet hooks. Set includes: 6 cord lengths: 5", 9", 12", 14", 16" and 19" (13, 23, 30, 36, 41 and 48 cm). Four end buttons to turn any cord into a stitch holder or to use as an end cap for a straight, flexible needle or Tunisian hook. Two extenders for cord-to-cord connections. Interchangeable with any Denise knitting or crochet product. Made in the USA.