Double Flare Acrylic Hollow / Solid Tunnel Expander Ear Plugs Made of durable acrylic. Comes in sizes 8g, 6g, 4g, 2g, 0g, 00g, 1/2", 9/16", 5/8", 3/4", 13/16", 7/8", and 1". Beautiful opaque white color. Comes in both hollow tunnel and solid tunnel (or solid post) designs. Multiple gauge sizes, many color variety. There'll surely be one that suits you!