6x2mm TierraCast® silver plated twist spacer beads. Silver plate is a thin surface layer of actual silver. TierraCast uses "Britannia" casting alloy for cast pewter findings. Many jewelry makers use this kind of bead to add space, color, and texture to their beaded designs. These beads will fit normal bead cord and head and eye pins, but not heavier cord such as leather, hemp or waxed cord.