Description: Self Watering Sprinkler is a simple and effective way of watering your plants while you are on vacation for 1 month. Just pushed the tube into soil. the water will be slowly emitted automatically watering your plants without the need to set timers or worry about electronic devices being turned on while you are away.  Using no power source this will automatically keep a potted plant's soil at the optimum moisture level. You can also mix fertilizer with water and by this spike fertilizer plant automically. It's perfect for watering any indoor plant. Great for people who travel and want to make sure their plants are properly watered. Specification: Material: Borosilicate glass Color: Clear Shape: Mushroom, Star, Bird, Snail Size: Bird: Total height: Approx. 25.5cm / 10.04inch Tube Diameter: Approx. 5.5cm / 2.17inch Tube Length: Approx. 10cm / 3.94inch Star: Total height: Approx. 28cm / 11.02inch Star Diameter: Approx. 10.5cm / 3.96inch Package Includes: 2 Pieces of Garden Glass Watering Sprinklers Note: Both inlet and outlet are small holes, so you should be patient when watering. To avoid the soil gets in the tube, Wrap the the bottom of the tube with gauze before you insert it to the soil.