Smooth for comfort and concave for coolness, these double flare tunnels make an excellent choice for anyone. Made of natural aventurine stone, the tunnels are a solid mix of blue, green, and grey. They’re sold in pairs, though of course each tunnel is totally unique due to the nature of the stone. We’ll do our best to give you a matching set! These tunnels are available in any of the following sizes: 00 gauge (10mm), 1/2 inch (12mm), 9/16 inch (14mm), 5/8 inch (16mm), 3/4 inch (19mm), 7/8 inch (22mm), 1 inch (25mm), 1 & 1/8 inch (29mm), and 1 & 1/4 inch (32mm).