4-Piece Garden Sprinkler Set for Indoor/Outdoor Use Description: The self-watering sprinkler is a simple and effective way to water your plants while you're away on vacation for up to a month. Simply push the tube into the soil. Water will slowly be released, automatically watering your plants without the need to set timers or worry about electronic devices turning on while you're gone. Without using a power source, this will automatically maintain the soil of a potted plant at the optimal moisture level. It's perfect for watering any indoor plant. Ideal for people who travel and want to ensure their plants are properly watered. Specification: Material: Borosilicate glass Color: Clear Total height: Approx. 29 cm/11.42 inches Diameter: Approx. 7 cm/2.76 inches Shape: Mushroom Dimensions: As shown in the picture. Package includes: 4-piece glass garden sprinkler set Note: Both the inlet and outlet holes are small, so please be patient when watering. To prevent soil from entering the tube, wrap the bottom of the tube with gauze before inserting it into the soil.