Descriptions: 
This automatic water drip spikes with side adjustable valve design Perfect to built your automatic water irrigation control system for outdoor and indoor potted plant.

Features:
Side adjustable valve design, flow control.
One size fit for most bottles, suitable for most common water bottles with the neck diameter of 1.83 - 2.79 cm.
Can be inserted into the soil easily.
Perfect for potted plants, houseplants, patio plants or any other garden plants watering .
Please Note: We do not recommend using plastic bottle to hold more than 1.5L water OR using heavy glass and wine bottle on the spike, simply because too-heavy weight on top can easily cause the structure tilt.

Specifications:
Material: Plastic
Colour: Green
Size(LxW): 18 x 5 cm
 
Package Contents: 
8 x Plant Automatic Watering Spikes