The DIG Irrigation FM01AS is a complete drip watering kit for hanging baskets, pots and planters. This kit contains all the necessary parts to install a drip system for up to 10 (8-10") pots or baskets. Note that 2 emitters should be used for larger pots (12-18"). This drip kit can be easily expanded to irrigate of up to 20 (8-12") pots or baskets. This item features an anti-siphon valve which protects your home"s plumbing from dirt and chemicals brought in by backflow backflow from your irrigation system.