String-On Clasp has a Silicone grommet inside to securely hold the cording that you can thread through it. This replaces the need to make a macrame knot or sliding knot (lover's knot) on your bracelet or necklace designs. These are made from naturally hypoallergenic brass and electroplated nickel free using the highest quality materials. Also works for light, smooth chain. Also called slider beads or rubber filled beads or smart beads.
Lead-free. Nickel-free. 5.5mm x 3.8mm Hole size is approx. 2mm. By the pack of 2.