Made of Pyrex glass, these purple plugs have a deep, lush tone that looks super mysterious. The handcrafted double flare plugs are smooth for your comfort, though note that small bubbles in the glass may be visible. The style features both a concave and a convex side. They’re sold in pairs, though each and every plug is unique due to the nature of the material. We’ll be sure to provide you with a matching set. Double Flare Concave Purple Glass Plugs are available in any of the following sizes: 2 gauge (6mm), 0 gauge (8mm), 00 gauge (10mm), 1/2 inch (12mm), 9/16 inch (14mm), 5/8 inch (16mm), 3/4 inch (19mm), 7/8 inch (22mm), and 1 inch (25mm).