Super Pet Crittertrail Fun-Nels Assorted Tubes: * Bubble wave tube design features a comfort grip that is safe for your pets paws * The Assorted Hamster Cage Tubes, 8 Pc. has safe and secure connector rings snap on easily to ensure a safe passageway * Easy to clean since the tubes pull apart and snap back together for trouble free cleaning * Includes a colorful assortment of connector rings, an elbow tube, a tee tube , bubble plug plus 10 inch, 3.3 inch and 1.75 inch straight tubes * The Hamster Tunnels are a great way to Create amazing designs and expand your Super Pet CritterTrail habitat * These Hamster Tunnels are for hamsters, mice, gerbils, and other small pets.