All 1-channel systems can be expanded to four injection points with a four-channel kit. Included in the kit are a four-port manifold, and mechanical flow meters, wellhead fittings, and digital flow meters for three wellheads. One hundred fifty feet of hose is provided with the kit. The 4-channel kit ships in a large (3' x 2' x 2') wheeled plastic tool box and weighs approximately 100 pounds