✔3 Size: dia.3mm/2mm/1.5mm ✔Color: 12 color ✔Packing: 3box ✔Features:This beads is to tie Rainbow Warriors,Caddis emerger and midge pupa. Fly tyers have figured out that little glass beads incorporated into size #12 to #22 flies really add to the attractiveness of the pattern. ✔The glass diffuses light and refracts sparkle and attraction. ✔now think about the diffusion of fish magnetism throughout the watery environs and all those fish swimming towards your fly tied with our glass beads and ignoring the flies tied by some other poor soul without the glass fly tying beads.