Addi 50cm. Fine Circular Bamboo Knitting Needles are state-of-the-art and beautiful to work with. Perfect for those with a nickel allergy, these superb, lightweight, and extra smooth circular knitting needles are crafted from the finest slow-grown bamboo for a superior knitting experience you'll relish. In sizes from 2.5mm-9mm. Please note that the options given represent the length from needle tip to tip and not the cable itself.