These cobalt blue plugs have a cool bubbly surface. The handcrafted double flare plugs are sold in pairs, though each plug is slightly different due to the nature of the glass they’re made of. Don’t worry, we’ll do our best to provide you with a matching set. Get your Blue Iridescent Glass Plugs 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), 13/16" inch (20mm), 7/8 inch (22mm), and 1 inch (25mm).