The CCH2O Multisplitter Air Pump Adapter connects air pump to epicenter in addition to supporting up to 12 growth modules. Comes with Includes 3/4 in hose and 3/4 in clip clamps. Works with linear air pumps to distribute oxygen to air diffusers (air stones and Aqua-Pore diffuser disc). The chrome distribution manifold comes standard on all models and allows for each growth module to be individually adjusted with an on/off valve. Suitable for all gardening applications. Manufactured in California.