Got an air pump but need to connect multiple air stones, decorations, or filters? This 12-way air line splitter makes it easy! It's a simple plastic connector that takes one 8mm (5/16 inch) inlet hose from your air pump and splits it into twelve 4mm (5/32 inch) outlets. That means you can run several aquarium accessories from a single pump – perfect for adding oxygen, running bubble walls, or operating multiple sponge filters. Made from sturdy, pressure-resistant plastic that won't crack easily. It helps diffuse air evenly and creates a healthier environment for your fish by increasing oxygen levels. Great for freshwater tanks, saltwater setups, breeding tanks, or even hydroponics. The set comes with 5 splitters, so you can organize multiple tanks or have spares. Easy to install – just push your tubing into the ports. A must-have for aquarium hobbyists who want efficient, organized air distribution without buying extra pumps. Keep your fish happy and your tank bubbling beautifully!