This handy little tool makes working with multiple yarns at once so much easier. Use it for any type of stranded knitting by threading one yarn through each guide. Best for continental knitters, wear it on your left pointer finger and use the back guide (closer to your wrist) for the dominate color and the forward guide (closer to your fingertip) for the background color. Placement on your finger, as in where the guides are located on the top or side of your finger, can change your tension. Try rotating it up to the top of your finger for more tension, or down for looser tension. It also works for tensioning single color knitting or crochet too, just feed your yarn through both guides!