The mother of all rockets: The Saturn V! This is very old Skunkworks (also known as Polecat aerospace) kit from 2003. I started work in November 2012 and finished in March 2013.
The rocket is 10 inches in diameter and features one 98mm motor mount + 4x 54mm motor mounts. The 98mm mount is adapted to a 54mm motor with a nozzle adapter, completing the set of 5 bell nozzles.
The rocket also has scale fins, causing the rocket to be unstable without a large amount of nose weight. The tip of the nose cone has about 3 lbs of epoxy and 22 lbs of lead!