BOYE Size 13 Circular Knitting Needles, 36 inches - Chappy's Fiber Arts and Crafts
Knitting Needle Sizes and Conversion Chart (Free Printable) - Sheep and Stitch
Amazon.com: 32"Size 13 (9mm) Circular Knitting Needle for Beginners, Stainless Steel Circle Knitting Needles with Fixed Lace Cord, Round Metal Knitting Needles with Magic Loop for Sock, Blankets, Sweater, Gloves