The Denise Interchangeable Knitting Needles kit packs convenience and great value in one compact set. It features 10 pairs of circular and straight needles of variable lengths. Join the Interchangeable Needle heads to the flexible cords and each of the pairs makes straight needle lengths (9+ö, 13", 16ö, 20ö, 30ö, 34ö) or circular needle lengths (17", 19", 20ö, 22ö, 24ö, 26ö, 28ö, 33ö, 40ö, 50ö, 58ö). Needle head sizes include 5 to 15 U.S. (3.75-10mm). Easy to use lock mechanism ensures needles stay in place. A great gift idea for your favorite knitter!