Material:Carbonized Bamboo.Size:Each crochet hook is approx.48 inch / 1.2 meters long | Comes with 12 different size,meet your basic knitting needs,3.0mm/3.5mm/4.0mm/4.5mm/5.0mm/5.5mm/6.0mm/6.5mm/7mm/8mm/9mm/10mm | With adjoined plastic cable for maximum project flexibility.Can be used to woven carpets,sofa cushion,etc | Great having longer crochet hooks to use for crochet;Perfect for Great addition to your crochet project workbox | HIGH QUALITY:All of our product are high quality and good price.Buy in bulk and save