The Stitch Markers by Lori Holt of Bee in my Bonnet are good for marking the beginning and ending of pattern stitches, knowing where to increase or decrease the number of stitches, remembering where to change colors, and many other uses for your knitting and crocheting needs. These locking stitch markers will not slip off your project. The package includes 18 pieces in 3 colors. Made of durable plastic. Reusable storage tube.