ROSE Gold Plated ANTIQUITIES SYNTHESIS Plugs - 22mm - 40mm - Price Per 1 syn-the-sis (snth-ss) n. pl. syn-the-ses (-sz) 1. a. The combining of separate elements or substances to form a coherent whole. b. The complex whole so formed. We have taken our P267 Hand Polished Double Flare plugs and inserted them with Bronze Rose Gold plated designs. Each insert is roughly 4mm smaller then the plug size. So a 30mm plug has a 26mm insert. You get the same style you see in the picture