Feature:1. This lawn sprinkler spike is made of high quality plastic, anti rust and anti corrosion, to ensure that the sprinkler is strong and durable.2. The 1/2 inch internal thread makes the lawn sprinkler tightly sealed. This lawn sprinkler base is safer than the metal sprinkler.3. The structure is simple, easy to use, and can be connected to a variety of sprinklers for a variety of irrigation modes.4. The upper side 1/2inch internal thread, the side side 1/2inch external thread, and the side external thread interface, you can connect multiple ground rods in series.5. Wide range of uses, more efficient watering, suitable for balconies, courtyards, plants, wall, green microsprinkler irrigation, drip irrigation.Specification:Item Type: Lawn Sprinkler Spike BaseMaterial: PlasticProduct Size: Approx.19.5x7x3cm/7.7x2.8x1.2inWeight: Approx.270g/9.5ozThread Size: 1/2Inch Internal Thread on The Upper End, 1/2Inch External Thread on The SideApplication: Suitable for Balconies, Courtyards, Plants, Wall, Green Micro Sprinkler Irrigation, Drip Irrigation.Package List:10 xLawn Sprinkler Spike Base