S-Lon (standard) bead cord is .5 mm 3-ply twisted, bonded multi-filament nylon cord. Use for 6, 8, & 11/0 seed beads or other beads with at least a .8 mm hole. Use for Kumihimo, macrame & stringing.
S-Lon (fine) cord is .4 mm 3-ply twisted, bonded multi- filament nylon cord. Good for Kumihimo, bead crochet and bead weaving with small beads (11/0 & 15/0).
S-Lon (micro) is .12 mm 3-ply twisted, bonded multi-filament nylon cord. Excellent for bead weaving when multiple thread passes must be made through a bead.
S-Lon (heavy) cord is .9 mm 3-ply twisted, bonded multi-filament nylon. Ideal for 6/0 seed beads in both Kumihimo, macrame and twisted cord making. 35 Yards/spool.