The plant watering spike made of material plastic,it can help you watering your plants automatic and just deliver the sufficient amount of water a plant needs and to keep the soil moist when you need to go out for a long time or travel.You can control the water flow by the upper hole. Features - ColorAssorted Color - Material: PP. - Size: 13x3x3cm. - Automatic watering system,you do not have to worry about that no care of you plant when you from home for a long time. - Made of premium pp material, strong, durable and bright color. - Handy garden watering tools help deliver water where plants need it most. - No need to worry about watering your plant while you are ,this clever device simply attaches to screw-top bottle and dose the watering for you. - You can put water and fertilizer in the bottle at the same time to transport nutrient solution. Package list: 10 x irrigation emitter