This is our Acropora coral shelf MAGNETIC 5 Hole Frag plug by Ocean Aquaria!! Made in the United States, we use a special polymer resin making it very durable and reef safe!! It has a very strong neodymium magnet suitable for glass or acrylic thickness up to 1/2" This item offers 3 color options to enhance the look of your reef. (of course we can make it in any color by request ) It also provides a natural and stable environment for live coral and other aquatic organisms!! Perfect for reef tank enthusiasts looking to enhance their aquarium aquascape!! measures 7.5"x5"x2.5"
eBay