High quality Made of ceramic and ABS plastic, automatic irrigation of plants in pots and containers, indoors and outdoors. Accurate and efficient When the potted soil is dry, this spike will gradually drip with precision. When the soil is sufficiently moist, the drip will automatically stop. You can also add liquid plant food to stimulate growth. Easy to use Simply screw into an old plastic bottle filled with water, then insert into soil . You don't need to leave the bucket with water next to it. 600ml can last about 5-7 days. Connects with multiple bottles Total length about 11.5cm, mouth connects with 3 different sizes, maximum to 5.2cm (outside diameter), will fit most screw cap bottles up to 3 litres, including Coca-Cola. Cola, 7 Up, Pepsi, Tesco and more. Wide use It 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 Description Drip Irrigation Kit - Automatic Watering Stakes Watering System, Automatic Plant Drip Irrigation Slow Release for Indoor or Outdoor Plants Specifications Material: ABS Color: white and green Height: 11.5cm Diameter of bottle connects: max 5.2cm Watering system - Easy to use and efficient You just need to connect with a bottle, then interpolate on the ground. The probe is made of ceramic, the water comes out slowly from the ceramic part. There are no holes. I highly recommend trying this device about 1-2 weeks before your vacation! Package includes 4 x Holiday Plant Waterers 1 x Paper Box with English Instruction Note: The data are all manual measurement, please understand. please allow 1 - 3cm error, due to the light and display difference, there will be some color difference, depending on the physical object received Shipping Quantity: (according to the main image)