Features: Drip Controller: 1. Water is slowly released through the device over 15 days, providing automatic plant watering. Adjustable drip rate allows customized watering. 2. Easy flow control ensures plants receive water as needed. 3. Simply attach the spike to a water-filled bottle and insert the pointed end into the soil near the base of a potted plant. 4. Ideal for short trips, this device connects to any standard screw-top bottle to water plants automatically. 5. Mix water and liquid plant food in a bottle and use the spike to deliver nutrients directly to the roots. Specifications: Material: PP Color: GREEN Size: 13.5 x 3 cm Note: Compatible with bottles having a diameter of 2.54 cm (1 inch). Bottles with a diameter of 2.8 cm or larger are not compatible. Package Included: 12 pcs Flower Drip Spikes – GREEN