Description: 【PP Material】: Aquarium Undergravel Fish Tunnel is made of PP, this aquarium decoration is sturdy and resistant to damage, ensuring a long term addition to your aquatic environment 【Realistic Design】: Fish Hideout is designed to mimic the habitat of fish, providing a sense of security for your aquatic pets and enhancing their sense of well being 【Promote Balance】: Aquarium Decoration provides a hide resting place for small fish and , enhancing their habit 【Easy to Clean and Maintain】: Fish Cave has a smooth surface to prevent dirts accumulation and can be easily cleaned with a simple rinse 【Compact Size】: Fish Tank Hideout is 17.5cmx8.8cmx5.4cm/6.89inchx3.46inchx2.13inch, suitable for small aquariums, and easy to install, just place the fish hole where you want it in the fish tank Specification: Material: PP Size Chart: 17.5cmx8.8cmx5.4cm/6.89inchx3.46inchx2.13inch Package Includes: 1 Aquarium Underground Tunnel Cave Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.