Evelots Plant Flower Watering Spikes New Improved Valve Bottle Screw Set 12

Set of 12 flower pot watering devices with control valve. This new and improved design lets you control the water flow. You save time by letting this handy tool apply an even moisture to your plants while you are not home. Also you can add liquid plant food (not granular) into the plastic water bottle. Simple assembly, insert the plastic straw into the hole located near the adjustable valve, then just screw the spike into a 2 liter, 20 oz, 16 oz and or a 12 oz soda bottle. Includes 6-6 inch straws and 6-3.4 inch spikes. The opening to the spike measures approximately 1.3 inches in diameter.