Description : Plant Waterer Self Watering System : Plant Watering stakes made of ABS plastic material , durable and sturdy . Each water spike has a working life of more than a year , and our water spikes are more durable than other water spikes . Adjustable Switch : It can be adjusted to provide appropriate water according to different plant needs , can control the velocity of flow , so you don &# 39 ; t have to worry about the water being too fast or the hole being blocked . Easy to Install : Attach to a full plastic water bottle . Then , poke a hole in the top of the bottle ( allowing water to release ), and stick plant watering near your plant &# 39 ; s base . Fit Most Bottle : Watering bulbs Fit most below brand &# 39 ; s bottles that have 1 . 1inch inner diameter . Enjoy Your Vocation : Enjoy time with your family , your plants leave to me . Self plants watering spikes prefect for your vegetables , indoor outdoor garden , water plants day - to - day , potted plants , houseplants , herbs , patio plants , hanging baskets , desk pots , hanging plants , small tree , shrubs . Specification : Material : ABS Length : approx . 15 . 75cm / 6 . 2inch Package Includes : 12 Pieces Self Watering Spikes : Color might be slightly different due to the color calibration of each individual monitor . Please allow slightly measuring deviation due to manual measurement .