1 of 16 (41cm) ChiaoGoo Fixed Circular Bamboo Dark Patina Knitting Needles, Size US 13 (9mm);ChiaoGoo bamboo needles are made from Chinese Moso bamboo which is the largest and strongest bamboo from over 1,000 different species; dark patina needles go through an additional thermal process to obtain the darker color (no dyes or paints are used attain this richer color);Points are handcrafted by highly skilled craftsmen;Size is permanently laser etched on each item for added convenience and easy storage;ChiaoGoo products are mostly made in Hangzhou, China, distributed from Troy, MI (USA) and adheres to the latest environment-friendly manufacturing processes; most products are 100% recyclable