1)Made of good quality bamboo 2)Smooth surface finishing 3)Plastic tube ... knitting needles are made of good quality bamboo and plastic tube. The bamboo needles' surface smoothly and mellowly, and ... easy to break. Our company provides various sizes of bamboo needles, we can use it knitting sweater , woollen ... information, please contect with us. circular knitting needle, bamboo needle, sweater needle