For when you are using double pointed knitting needles as single pointed knitting needles. Small and light for comfortable knitting. The cap color tells you which side of the knitted fabric you are working on. Or use as point protectors to keep your stitches from falling off of your knitting needles. For double pointed knitting needles size 0 (2mm) - 10.5 (6.5mm). Includes 6, 3 peach and 3 aqua.