Description: Type: Watering Spikes Material: PP Size:13.5*2.5cm Quantity: 15Pcs Product color: as picture show included:3pcs 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 brand bottles: Pepsi, Coca-Cola, Iced Black Tea, Lipton, Deet Cola, Aqufina bottles . Note: 1.Please allow 0-2 cm differs due to manual measurement. 2.Due to the different display and different light, the picture may not show the actual color of the item. 3.If you have other questions, please contact customer service in time.We will give you satisfactory service.