This product is not suitable for mineral water bottles, but only for bottles with a mouth diameter of 2.79cm (1.1 inches). Suitable for brand bottles:Pepsi, Coca-Cola, Iced Black Tea, Lipton, Deet Cola, Aqufina bottles . In order to drip water normally, please drill a hole in the bottom of the bottle. After installation, if water overflows from the bottle mouth, please remove the plastic ring that comes with the bottle and tighten the bottle mouth.And then you can use it. 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. Description: Material: PP Size:13.5*2.7cm