These Purple Color Front Single Flare Glass plugs are such a fun pair to add to your collection. They are single flared and made with borosilicate glass. These plugs range from 16G (1.2mm) - 1/2" (12mm). Have a wearable area of 12mm with clear "o" rings. These items are hand blown so they will vary in size (+/- by 1mm). Smaller sizes have more of a transparent color, it's not as saturated as the bigger sizes. Sold in pairs (2 pc).