Plant Waterer, KinHom Garden Ceramic Automatic Self Watering Stakes for Indoor&Outdoor Vacation Potted Flower Tree and Drip Irrigation Water Spikes Probes Kits (4 PACK), Green Easy Use: Proper for most bottle like Coca Cola and other drink plastic bottle, most suitable for soda drink bottleThis watering spikes have two diameter bottle cap. Most EASY USE vacation plant waterer. Firstly, prepare a bottle to fill water. Secondly, connect the bottle mouth to the connector. Thirdly, insert the water probes into the soil. Four Spikes for one pack.Solid package for best protection.Automatic watering system for potted plants when you're away Good quality ceramic watering spikes for longer time use,and it is easy to carry. The probe is made ceramic material, the water comes out slowly through the ceramic part, also this material will benefits plants roots unlike plastics ones.