Keep your headset jacks clean and free of dust! These dust plugs are made with silver-plated & handmade glass beads. All glass beads are crafted one at a time on my oxy-propane torch, properly annealed and thoroughly cleaned. One of these charms has one medium blue and one grass green spacer bead, the other charm has a medium blue, a jade green and a uranium yellow spacer bead. No, the uranium yellow is not radioactive - we checked!