With the exception of the nicely hollowed out engine nozzles, the resin parts are solid. The parts are molded with crisp details, finely engraved panel lines and a smooth surface finish. There are no visible air holes in my parts. All parts are still attached to their pour plugs. You'll need to provide your own wire or rod for the turbine exhaust braces. The instructions consist of a short program history, a couple of exploded assembly drawings and a five view painting and decaling guide.