Feature:
ECO-FRIENDLY & HIGH QUALITY The watering system is made of high quality PP plastic, which is environmentally friendly and durable. The anti-tip holder prevents your self-watering system from tilting even if the bottle is too big.
ADJUSTABLE VALVE The drip irrigation has an automatic watering system and is a good helper for gardening. The plant irrigator with control valve can allow the dripping speed of 0-60s/drops, and the persistent drop lasts 1-15 days.
EASY AND CONVENIENT Installed without tools, just drill a few holes in the bottom of the bottle or cut the tail of the bottle for air to circulate.
Widely Compatible The upgraded garden watering system is suitable for most bottles (diameter 28-30mm). 
ENJOY YOUR HOLIDAY - Whether your plants are indoors or outdoors or in the garden, at home or in the office. These automatic watering spikes take care of your plants without the need for water every day.
 
Specification:
Material:PP
Size:17*8.8cm
Color:Pink
Suitable for most bottles (diameter 28-30mm). 
 
What's included:
4 * Plants Automatic Adjustable Watering System