Gorilla Playsets are all preboxed and ready to assemble. It comes with 3-D illustrated step by step instructions. All wood is predrilled, precut, and presanded. Easy to put together with household tools. Best-Valued Pre-Boxed, Pre-Milled Wooden Swing Sets in the Marketplace. These wooden swing sets come standard as shown. They are designed with a child's safety in mind, yet they still provide a challenging and fun recreational setting. All of the Gorilla™ wood swing sets are constructed with choice grade wood, naturally resistant to rot, decay, and insect damage. Unlike other pre-cut and pre-packaged wooden swing sets, Gorilla™ incorporates solid framing and all bolt construction, heavy-duty swing belts, components and slides, all of which provide maximum stability, longevity and safety and makes the Gorilla™ brand wood swing sets the heaviest duty and best-valued pre-milled kit in the marketplace. There are many accessories to add. If you are interested in add ons, please email us.