Silicone Filled Slider Smart Bead - 5mm Tube - Gunmetal

A bead with a silicone filled inside, with a smaller hole through it. Also called slider beads or rubber filled beads or smart beads.

You can also use them as sliding clasps (vs a sliding pair of knots) by threading two lines through from opposite sides.

4mm x 5mm Hole size is approx. .7mm. By the each.