The main body is a solid chunk of resin, with crisply molded details and no visible airholes. The detail on the Gemini B capsule is simply amazing! The RCS nozzles are also quite delicate. Fortunately, extras are provided in case you damage or lose any. All parts need to be removed from their pour plugs, but very little other cleanup is required. Decals are included to represent solar cells for the photoetched parts. The instruction sheet includes a short program history and multiple view assembly drawings. A five view painting and decal guide finishes off the instructions.