Easy to Use: these watering spikes fit for 2 different size plastic coke bottles, depending on the size of the bottle applied you can water your plants more than 1 week; Choose the cola or coke bottle and remove the neck ring of cola bottle if water leaked out of the bottles where the stake was attached Effortless to Install: foremost, soak this bottle adapter in water for about 15 minutes, and then use standard cola bottle and fill water bottle with water, screw this bottle adapter onto the bottle, poke a small hole to let a bit of air in as it drains, finally, push this stake with bottle into soil near the plant Suitable for People Who Like Travel: you don't have to worry about who can take care of your plants when you are traveling, these watering stakes can keep your plants alive, even if you don't have a travel, you will find this product is easy to use you might just keep it around when you are not traveling, bringing you much convenience Widely Applicable Occasions: use these plant watering devices in any potted plant or flower in your house, office, or even balcony; While being both effective and reliable, these are also versatile for watering different types of indoor or outdoor plants, adaptable for outdoor or indoor use Serviceable Material: these self watering spikes are mainly made of ceramic materials, they are reliable to use, sturdy and firm, not easy to fade and break, have a long service life, can be applied for a long time Features: Practical tools: This terracotta plant watering spike is practical and useful, can be an ideal present choice for you to send your family members, friends, relatives and more, they will be happy to receive this gift. Wide range of application: These watering spikes can be applied wherever you may need plant support. In your house, office, balcony, hanging plants, garden, or greenhouse. Specifications: Material: ceramic Color: as shown in the picture Size: 10.5 x 4 cm/ 4.1 x 1.6 inches