Features . Easy Kitty Double Spinning Topper with Toys. Intended to be placed on top of a Cat Craft scratching post of any size. This fun cat spinning topper is also equipped with an Easy Kitty Building System. Replaceable dangling pom pom toy and a replaceable spring toy to keep your cat engaged. Easy to add extend or replace toys at your convenience. Detachable spring and dangle toys. Add a Spring Toy to the top of it for more excitement for your cat. Hassel free replacement parts. Not a stand alone toy. Easy to assemble Hardware Specifications . Overall Dimensions Diameter 18 x 8 50 in . Weight 2 lbs