Red Iridescent Glass Double Flare Plugs Choose your desired size! Clear glass plugs with a red and blue side that have depth to them and shine blue/purple/red depending on environment and angle of view. See these glass plugs in real life to believe it: they look like extra-dimensional pools of light! Bold, multichromatic shine as an alternative to your typical glass plugs. Material: Glass EVERYTHING we sell is brand new, never worn.