The kit parts are all photo-etched thin brass on two sheets and are intended to be used with any Revell 1/144 scale Space Shuttle kit. Some of the parts are extras, always a nice touch. Parts are included for both the shuttle in launch configuration (with the RCS ports covered) and in orbital configuration, including EVA hand-rails and door hinges. The parts are identified by numbers etched near them. These numbers correspond to the numbers on the graphical assembly instructions, which also include painting information. Hand rails are also included for Spacelab and Habitab modules.