These very convenient row counters can be used with fine needles as well as thick knitting needles, from size 15 to approximately 7mm. They come with number beads from 1 to 0, so when you reach the end of a row, you pass your knitting needle through the loop next to the number. By attaching an alpaca marker to the tens digit of the row number and hooking the ones digit onto the knitting needle, you can easily keep track of the rows you're knitting. This is a very convenient item. They are lightweight and won't be a burden. The number 9 is a different color, so you can easily distinguish between 6 and 9, allowing you to knit smoothly and clearly. This set comes with 5 markers. The last three photos show example usage, and they can be used with needles from fine sizes up to approximately size 12.