Kaytee CritterTrail 2-Level Habitat Includes a petting zone, exercise wheel, food dish, and water bottle Features a look-out tower, exterior extreme wheel, and front access door CritterTrail Habitats are completely compatible with all CritterTrail accessories For dwarf hamsters, hamsters, gerbils, mice or other small animals Bar Spacing: 1/4" Ships in own container with reinforced packaging to protect product during shipping