These are very convenient stitch markers that can be used with fine needles as well as thick knitting needles from size 15 up to approximately 7mm. They come with bead numbers from 0 to 9, so when you reach a new row, you can thread your knitting needle through the ring next to the number. By attaching the alpaca marker for the tens digit and hooking the single digit onto your knitting, it's easy to keep track of the number of rows you've knitted, making it a very useful item. They are lightweight and won't be a burden. The number 9 is a different color, so you can easily distinguish it from 6 without confusion, allowing you to knit smoothly and clearly. The set includes 5 markers. The last three photos show examples of how to use them, and they can be used with needles from fine sizes up to approximately size 12.