[15Pcs Plant Self Watering Devices Set]The automatic watering machine comes in three colors: orange, blue, and green. It is made of preferred environmentally friendly PP plastic.And it is 16.5cm long, 5.5cm wide and 30mm in diameter. The automatic flower watering device has a good permeability, and the watering speed can be adjusted. The pot plant watering nail can be used for universal plastic beverage bottles, such as drink bottle and so on.[Convenient Installation No Need 10 Seconds ]No tools required, no need to drill holes on the bottle. Just put the fix side of the spikes on the opening of bottle (perfilled water) , then turn the bottle upside down and plug the spike into the soil No need to care about the water pressure. No leakage [No Worries Long Time Water Supply ]Automatic garden watering device no need to poke holes in the bottom of the bottle, and stop watering without being affected by water pressure. Provides 3-20 days of travel time. 2 in 1 Dual head design can provide plant moisture anytime. Don't worry about your plants withering during travel for business or travel on holiday [Latest Deisgned Adjustable Valve Automatic Irrigation Equipment]Perfect for vacation plant watering. This self watering spikes devices with control valve can control the dripping speed in 0-90s/drip. You can set the dripping time for 3-20 days or more depending on the time you need. Don't worry about your plants withering during travel for business or travel on holiday [Widely Used in Irrigation]Whether your plants are indoor or outdoor, at home or in the office, this self watering planter devices Irrigation system ensure your plants hydrated. These plant watering devices are perfect for potted plants, houseplants, patio plants, hanging baskets, deck pots, hanging plants or any other plants. Take it and ready to built your automatic water irrigation control system How to use?1.Tighten the holder.2.Screw on the regulating valve switch.3.Reversed the holder and insert the bottle with water.4.Inverted waterer plant and bottle.Insert into the pot,regulating drop speed.Note: 1.Make sure there is no air in the valve; 2.Don't cut the bottom of the bottle (important)colour: orange + green+ blueMaterial: Plastic Package Contents:15 x Plant Self-Watering Devices Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.