Description: - 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 anytime. - 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:plastics - Color:As pictures shown