WORRY FREE PLANTING-Auto plant waterer is a good assistant for the gardening, you dont have to take care of your plants every day; plant watering device is perfect for planting scientifically as different plants have different absorption, self watering spikes can prevent over-watering and make plants healthier. ADJUSTABLE SWITCH-With slow release control valve switch, plant watering spikes can control the speed of flow. EASY TO USE-Without any tedious installation, all you need to do is to cut a hole in the bottom of the bottle and tighten the drip irrigation watering devices, and then insert it into the soil, no need nail and no danger. COMPATIBLE BOTTLES-Plant watering globes are compatible with the bottles that have 1.1inch inner. 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, etc.