Tulip Needle Company KKMM-100-13 40" Knina Knitting Needles, 13/9mm An exceptionally smooth cable-needle join that makes your knitting projects easier than ever! Great for magic loop knitting while the sharp needle points make knitting comfortable The needles are made of bamboo the cable is made of nylon and the join is made of brass This package contains 40 inch knitting needles with a rotary cable join that prevents twisting