WESTING BRIDGE LLC-ChiaoGoo Premium Bamboo Circular Knitting Needles. These ChaioGoo knitting needles are made of high quality Moso bamboo: the largest and strongest bamboo in the world and are very attractively value priced when compared to other brands on the market. The coloring is a warm brown and is completely natural. ChiaoGoo circulars feature silver ferrel and clear flexible cable that spins within the smooth connection of the ferrel so your cable does not twist as you knit. These fabulous knitting needles are available in a variety of sizes.