Black Acrylic Starry Night Picture Plugs - Sold as a Pair (7/16" (11mm)) Go to amazon.com Related posts Top gauges 7/16 FeatureMade of AcrylicResin overlay over pictureHandmade in our shop.Screw OnInternally Threaded DescriptionMade of Acrylic, Resin Overlay over picture. Screw On, Internally Threaded.