High quality, made of ceramic and ABS plastic, automatic irrigation for plants in pots and containers, suitable for indoor and outdoor use. 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 support growth. Easy to use: Simply screw into a plastic bottle filled with water, then insert into the soil. No need to leave a bucket of water nearby. A 600ml bottle can last approximately 57 days. Connects to multiple bottles: Total length approximately 11.5cm. The connector fits three different bottle sizes, with a maximum outer diameter of 5.2cm. Compatible with most screw-top bottles up to 3 liters, including common beverage bottles. Wide application: Resists evaporation and drips slowly to help prevent root rot. Ideal for business trips, holidays, and vacations, especially for those who are not experienced in plant care. Drip Irrigation Kit Automatic Watering Stakes, Watering System for Indoor and Outdoor Plants Specifications: Material: ABS Color: White and green Height: 11.5cm Bottle connector diameter: Max 5.2cm Watering system Easy to use and efficient. Simply attach to a water bottle and insert into the soil. The probe is made of ceramic, releasing water slowly through the ceramic portion. No holes required. Recommended to test this device 12 weeks before going on vacation. Package includes: 4 x Holiday Plant Waterers 1 x Paper Box with English Instruction Note: All measurements are manually taken. Please allow 13cm error. Due to lighting and screen differences, slight color variation may occur. Actual product may vary slightly. Shipping Quantity: As shown in the main image