These individual circulars, completely interchangeable with Denise knitting or crochet sets, are ideal if you need just one size of needle tips and a few cord lengths (great for sweaters and shawls where the number of stitches varies). Each package contains one set of needle tips, two cords, one cord connector and two end caps. You will be able to make 20", 24" and 36" lengths (approximately 50cm, 60cm, and 90cm).
3.75mm is approximately US 5
4.0mm is approximately US 6