High qualityMade of ceramic and ABS plastic, automatic irrigation of plants in pots and containers, indoors and outdoors. Precise and efficientWhen the potted soil is dry, this spike will gradually drip accurately. When the soil is sufficiently moist, the drip will automatically stop. You can also add liquid plant food to stimulate growth. Easy to useSimply screw into an old plastic bottle filled with water, then insert into the soil. You don't need to leave the bucket with water next to it. Wide useIt is not easy to evaporate, drip slowly to avoid putrefaction. Perfect for business trips, holidays, vacations, especially people who are not good at soil cultivation. Product Features: A small water infiltrator solves the problem of 'watering flowers and plants every day and when nobody takes care of it when traveling on business. Using this ceramic flower sprinkler, it can automatically control the speed of water seepage for watering flowers and plants according to the wet-dry ratio of the soil. Save your time and effort, suitable for outdoor and indoor, long service life and affordable. Material: Ceramic (white part) + PP plastic (green part) Product size: large mouth diameter: 4cm, small mouth diameter: 3cm, height 10.5cm. Shipping quantity: 4 pieces