Details:Auto Drip Irrigation Watering System, Spike Garden Plants FlowerThe product is shied based on the color or size of the main image of the product page.Auto Drip Irrigation Watering System, Spike Garden Plants FlowerSpecifications: Type: Watering Spikes Material:Size:13.5*2.7cm Quantity: 1/6/12/24Pcs Product Color: Blue,green ,or Random Features: 1: The Flow Rate Can Be Controlled, and the Plant Watering Device with a Control Valve Can Control the Drip Speed 0-60s / 1 Drip, and the Sustained-release Drip Lasts 1-15 Days 2: Simple and Convenient, Without Any Cumbersome Installation, Just Drill Some Holes in the Bottom of the Bottle or Cut the Tail of the Bottle 3: Accurate Water Volume, to Provide Different Amounts of Water for Different Plants and Flowers, Do Not Become a Plant Killer, Other Watering Plants Either Have Too Little or Too Much Water. In Some Plants, the Old Leaves Just Turn Yellow and Fall. But if the New Growth is Yellow, It May Be a Sign of Over-watering or Underwater 4: Suitable for Bottles: Dr. peer, Pepsi, Coca-Cola, Iced Black Tea, Lipton, Deet Cola, Aqufina or Other Bottles with Inner Diameter of 1.1 Inches .