Gravity feed irrigation system. For best operation there should be 3' or more of drop between the faucet and the drippers. (It will start to work with only 1' of drop, but not optimally.) Includes 20 drip spikes with a leak rate of 1 gph, 50' of 1/2" inside diameter (I.D.) header hose, 50' of 1/4" I.D. feeder tube, a yellow hole punch, and connectors (1 compression end, 20 of the 1/4" straight connectors and a hose/faucet connector) to make a system to water up to 20 plants.