These bamboo straight pins (set of 10) are handmade by Japanese craftsmen. Th pins are extra-long and therefore perfect to use as marking pins for crochet ad knit projects with thick yarns. The bamboo straight pins can be used to hold your knitwork together while you are sewing the parts together. But they can also serve as marker pin to mark where you want to place a button or buttonhole. The natural structure of bamboo prevents the pins from slipping out of the crochet work.