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Spencer Self Watering Spikes, Indoor Outdoor Plastic Bottle Automatic Garden Plants Drip Irrigation Slow Release System/Works as Watering Bulbs or Globes Stakes with Screw Valve. Adjustable Switch, It can be adjusted to provide appropriate water according to different plant needs, can control the velocity of flow, so you don't have to worry about the water being too fast or the hole being blocked. Easy to use, No dangerous trepanning and trouble preparing work, Just put in the right bottle.(Dr.pepper,Pepsi,coca cola,Lipton,Deet Coke,Aqufina or other bottle that have 1.1inch inner diameter capsule.) The new upgrade gives Plant Watering stakes a better air tightness, which makes the water in the bottle not flooded you flower box and killed everything.

Specifications:
Material: Plastic
Color: Green, Blue
Size: 13.3*3.3*3.3cm / 5.2*1.3*1.3in
Valve Size: 4.2*2.5 cm / 1.7*1in
Quantity: 20 Pack
Adjustable Rate: 0-60s / Drip, 50-250ml / Hour
Inner Diameter: 27.6mm / 1.1in
Fit for: Most drink bottles that have a mouth diameter of 1.1 inch like Coca Cola bottle, Pepsi bottle, Lipton bottle, soda bottle, etc.
Note: Do NOT support bottles with a mouth diameter of 28mm or more.

Notes:
1. Make sure there is a hole in the bottle or the bottom of the bottle is cut off. Without air pressure, no water flows out of the irrigation.
2. Adjust the water flow to the maximum value before each use. Make sure there is no air in the watering spike. Then adjust the water flow slowly.
3. After adjusting the flow rate and burying the outlet of the irrigation system into the ground, the flow rate is most stable.

Package Includes:
20PCS Self Watering Spikes