The transparent connection track is easy to install, can be easily spliced and disassembled, no other tools are required. There are ventilation holes in the track to ensure air circulation and comfortable environment. The inner edge of the track also has non-slip texture design, which is convenient for small pets to climb and will not slip and fall. Material: Plastic Size: About 15.00X6.00X6.00cm/5.89X2.36X2.36in Our hamster cage tubes are made of premium plastic material, sturdy, not easy to damage, will not be bitten or broken due to excessive activity of your pet. Comfortable pipes, pets can easily climb and play without hurting their paws. Size: About 15.00X6.00X6.00cm/5.89X2.36X2.36in; The hamster tube with a intimate transparent tube design greatly facilitates you to observe the daily activities of small animals at any time and and record its habits. The hamster cage accessories are suitable for providing more activity space for small pets such as hamsters, gerbils and mice, and you can also use them to expand the space outside the cage to bring more fun and exercise to your small pets. POPETPOP DIY Hamster Tunnel - 12Pcs Hamster Tunnels and Tubes Hamster Maze Adventure External Set Hamster Playground DIY Creative Connection Tunnel Track for Hamster