Feature:Drip Controller: The water will be slowly emitted through the device within 15 days, automatically watering your plants.The drip speed is up to you. Use easily flow control to make sure your plants watered any time.Simply screw a spike onto a full bottle of water, then insert the pointed end directly into the soil near a potted plant's stalk.You do not worry about watering your plants when you're away on a short break, this clever device simply attaches to any screw-top bottle and does the watering for you.Combine water and plant food in a bottle then use the water spike to deliver the ultimate nourishing fluid.Specification:Material: PPColor: As pictures shownSize: 13.5 x 2.7cmQty: 12Pcs