Perfect for thin branchy corals such as Acropora, Reef Plugs are the ultimate accessory for successful coral fragging. These little cement plugs feature a 1" diameter top covered with bright white sand that is easy for corals to adhere to. The shape of the plugs allows them to easily sit in eggcrate, or find a crevice in your live rock to slide them into. A must-have for the coral-fragging hobbyist.