These Karbonz Fixed Circular knitting needles from Knit Pro are made from Carbon Fiber with nickel plated brass connectors. Fixed circular needles allow you to knit 'tube' projects in the round such as socks, cowls, hats and more. Try using the magic loop method, or two circulars at once to work the round. Your project sits in your lap as you work, instead of hanging off the needles; when knitting a large heavy project.