Thin Walled Black Silicone Tunnels - 5/8" - 16mm - Sold As a Pair Go to amazon.com Related posts Top 16mm plugs silicon FeatureMade of SiliconeSold as a pair.Soft and Flexible.Wearable Area is 8mm long5/8" - 16mm DescriptionMade out of Top Quality Silicone. Soft and Flexible. Sold as a pair.