The main rocket body is one solid resin part molded with crisp details, engraved panel lines and a slick surface finish. The two engine bells are hollowed. No airholes are visible in my parts. All resin parts are still on their pour plugs. Some of the tinier resin and photoetched parts are included as extra parts, just in case. The instructions include a short program history, a three view and wraparound assembly drawing. Photoetched parts are identified by numbers etched next to each part and subsequently called out on the assembly drawings. Likewise, decals are also identified by number, making placement easy with the four view painting and decal guide.