Cork Pops 2 Boxes of Wine Opener Refill Cartridges are designed for use with all Cork Pops wine openers. Each box contains 2 screwless wine opener refills, each weighing 15 grams. These refills are made from propellant gas and are easy to use, providing a quick and efficient way to open wine bottles. The cartridges are black in color and come in a compact size, making them convenient to store and handle.