This Star Trek papercraft is a Cargo Management Unit (CMU), a small utility craft in use by the Federation from the mid-23rd century to the 24th century, based on the TOS (The Original Series) of the Star Trek series, the paper model was created by MTK.
CMUs were first used in the mid 23rd century, assigned to Starfleet shipyards in orbit of Earth. They assisted in the refitting of the original USS Enterprise at the San Francisco Fleet Yards as well as the launch of the USS Enterprise-B. CMUs continued to be used into the 24th century and were numerous at Utopia Planitia Fleet Yards and Deep Space 9. The CMUs at DS9 were generally gray in color.
In 2364, the USS Enterprise-D acquired a CMU from Support Services on Relva VII in order to eliminate three older and bulkier units from the cargo bays. By 2379, new silver craft resembling CMUs were in use at the spacedock where the Enterprise-E was repaired following the Battle of the Bassen Rift.
The CMU is a single-occupant vehicle with seating for the pilot only. Generally, the pilot must be spacesuited, especially if the pilot is planning to perform a space walk. The front of the CMU features several large windows. The craft also has a large headlight at its extreme forward end for illuminating a work area.
As the CMU is primarily a maintenance craft, it can be equipped with a variety of tools, including a set of dual remote manipulator arms called the Grabber Sled. The CMU can also serve as a tug for cargo modules with the Cargo-Train Attachment. The CMU can operate both in the vacuum of space and within the atmospheric and gravitational conditions of a starship cargo bay or planetary surface.
You can download the papercraft template here: Star Trek: TOS - Cargo Management Unit Free Paper Model Download