All plugs are made with surgical steel tunnels & sold as a pair. All single flare gauges come with a set of O-rings. All pictures of plugs are shown in 1/2" gauge size. Please keep in mind different sizes will look different then the pictures. If you would like to see a picture of the gauges in your size send me a message before placing an order. Plugs are made to order please allow 3-5 days before shipping. I am happy to try & customize different sizes or styles, please contact me if you have a specific request & I will work hard to fit your needs I make all gauges in single flare with the exception of 3/4" & larger. I do have double flare & single flare available in most sizes. If you would like to switch send me a message before ordering. Available Sizes: 3/16 (5mm) 4g 1/4 (6mm) 2g 1/3 (8mm) 0g 3/8 (10mm) 00g 7/16 (11mm) 1/2 (12mm) 9/16 (14mm) 5/8 (16mm) 3/4 (19mm) Double Flare Add $5 Thank you for stopping by Vintage Rose Gauges Shop! For sanitary purposes I only accept returns for broken or defective merchandise within 30 days. Please double check all your information including size & shipping address before placing your order. If you order the wrong size I will exchange for the correct size for a $5 charge per pair plus shipping. If you have questions please send me a message. We do use nickel free products but please be aware other materials are used in the making of the products that include glues, paint, silicone O rings, surgical steel tunnels, & other materials. If you are prone to allergies with jewelry please contact me before placing an order & we can try to accommodate them. Green Chandelier Stamped Metal Dangle Gauges 4G, 2G, 0G, 00G, 7/16, 1/2, 9/16, 5/8, 3/4