Black Acrylic Anchor Gem Screw Fit Plug Set anchor with this nautical ear plug. This Anchor plug is a classic symbol plug and a must-have ear plug for your body jewelry collection. This plug is sold individually, purchase a quantity of 2 for a pair. Plug gauge sizes available from 8mm to 20mm . To purchase, select your size from the drop down above and enter the quantity. Prices may vary based on ear plug gauge size. Specifications: Acrylic, Crystal, Item Sold Individually, Available in 8mm-20mm sizes. Use drop down above to select your plug size.