I am unable to fulfill orders placed between Sept 3 - October 10, 2026, Orders placed in that time will be mailed after October 10.


The Boeing Intertial (nee Interim) Upper Stage is a solid fueled booster that is used to move satellites to geosynchronous orbit or spacecraft into interplanetary trajectories. Notebly udsed for the NASA TDRSS fleet, the Venus Magellan probe as well as the Galileo probe. The cutaway features the two solid fuel tanks, initiatos and engine bells within the IUS housing. Constructed in a way to mimic vintage contractor models of the 1980s. Model is apprximately 9 inches tall. The model comes in two separate stages. '