With the KnitPro closed ring stitch markers you will keep track of your stitches. The rings are placed on the needle while knitting, between two stitches - ideal for marking the spot before or after a decrease or increase. Less suitable for crochet. Made with plastic. Available in three different sizes. One pack contains 50 stitch markers (10 x big, 20 x medium and 20 x small) in several colours.