Inserts (grommets) to give your bead holes that finished look. Just drop into place and a dab of glue to hold there. Great for lampwork beads, metal clay (smoother hole), ceramic, polymer clay, whathaveyou. Just like the pandora/troll/biagi/whatever bead systems. Fits a 4 mm hole, plus or minus a .1 of a mm.
1.8mm x 5.6mm By the pack of 10.