Key features

• •【Adjustable Valve】Our plant water spikes with slow release valve switch can be controlled with dripping speed 0-60s/drip. the 550ml bottle can be used for 5-7 days at a slow speed, and the 2-liter beverage bottle can be used for 7-20 days.
• •【High Quality Material】 Our adjustable plant water dripper is made of sturdy plastic that is very durable and long lasting. The automatic plant waterer for outdoor plants with high strength and toughness, good heat and cold resistance, safe and durable.
• •【Screw Top Design】 These self watering spikes are easy to screw and connect with water bottles. Usually, we recommend insert these watering spikes in the middle of the pot and let them stand vertically to avoid falling down in case of plant pot is not heavy enough.
• •【Fit These Bottles】 Fit These Bottles: These self-watering spikes work with most beverage bottles that has an inner diameter of 1.1 inches. They are not appropriate for mineral water or purified water bottles（the inner diameter greater than or less than 1.1 inches).Before installing, measure the bottle's inner diameter, taking into account the thread size.
• •【Wide Application】Whether indoor/outdoor plant or garden, home or office, this self-watering spikes system ensure your plants hydrated, perfect for potted plants. Without worried your plants withered while enjoying your holiday with your family.