Perfect for watering systems: it can be adjusted to suit suitable water according to different plant needs. Tight or loose the valve to control the water dripping rate, speed 0-60 S/Drip dripping, time 0-20 days dripping all indifferent holidays your needs. Meet all your needs: improved plant watering system differ from traditional self-watering devices: 1. The improved system irrigation devices fit perfectly with any size bottle. 2. The new anti-tip holder does not allow your self-watering system if the installation bottle is too large to tilt system. Easy to use: use a waste bottle with a bottle mouth of 0.8 to 1.2 inches. Simply drill some holes in the bottom of the bottle or cut it off and then give a control valve that can adjust the speed of flow, different amounts of water for different plants and flowers. Fits most bottles: watering spikes with chamfer angle bottle adapter suitable for most under brand bottles: Pepsi, Coca Cola, Lipton, Deet Coke, other bottle. Suitable for use: this plant irrigation device ensures adequate plant moisture, whether indoor, outdoor plants or gardens, apartments or offices. The self watering spikes are very suitable for potted plants, indoor plants, patio plants, hanging baskets, decking pots, hanging plants, etc. NOTE: 1. The size of the product is measured manually, and there will be an error of 2-3mm due to factors such as different measurement tools and measurement methods. 2. This product is all taken in kind, but due to differences in photography, lighting, color deviation, and personal understanding of color. As a result, there may be some color difference between the actual product and the photo, and the color is subject to the actual product. 3. Please take good care of our products