These are beaded stitch markers which are used for knitting and crocheting. They are used as a memory device to denote important locations when knitting or crocheting.. Stitch markers can be used to indicate upcoming increases, decreases, pattern changes, yarn changes, track rows of stitches and to aid in counting blocks of stitches on the needles for large projects. These stitch markers are made out of three 7mm by 5mm rondelle's with six 1mm beads spilt on to two lines of seven 1mm beads then bought together at a 2mm bead then split again with seven 1mm beads on each line down to a briolette clear crystal 15mm by 5mm bead. There is a Lobster clasp as the hook to hook onto your knitting or crocheting. There are eight different colours of stitch markers in this set.