Material: PVC Safety and Environmental Friendly Material, Not Easy to Fade Does Not Affect the Water Quality. Floating: With A Floating Ball, Will Not Sink to the Bottom, With the Flow of Aquarium Water and Move. Nylon Wire: Diver Position Can Be Adjusted According to the Length of the Nylon Connection Line. Application: Suitable For Desktop Fish Tank, Small and Medium-sized Fish Tank, Home Office Fish Tank, Micro Landscape, Succulent Plant Decoration. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please contact us.We will provide after-sales service .