The kit parts are all photo-etched thin brass which are intended to help convert the Revell Block I Apollo CSM kit to a Block II configuration. The etched detail on the parts is first-rate. The parts are numbered directly on the photoetched sheets and are referenced by those numbers in the instructions. Parts are included for the thrusters, handholds, hatch, side window frames, and the navigation telescope ports for the Command Module and new radiators, fly-away umbilical receptacle, scimitar antennae, and access panel covers for the Service Module. In addition to that, replacement parts for the High Gain Antenna (HGA) dishes are included. You will need to supply six pieces of 1mm halfround rod to complete the radiators. No folding is required for any of the parts in this set, although the HGA dish parts need to be formed into a concave shape. The instructions consist of a single page with a scale diagram showing the placement for the parts and their proper color. No mention is made of it, but we're all clever enough to know that you have to sand all the detail off of the existing kit parts first...