Features . Easy Kitty Motorized Topper with Toy. Equipped with the Easy Kitty connecting system. You can add replaceable dangle toy to keep your cat engaged. Extend or replace toys at your convenience. Detachable dangle toys. Requires 4 AA batteries. To be used with either Scratching Post or another One Source Cat Craft cat furniture item. Not a stand alone toy. Hassel free replacement parts Specifications . Overall Dimensions 11 H. Weight 3 lbs