73 teeth is significantly a smaller gear than is intended for your model

They exhibit stiffer flex characteristics compared to the standard plastic parts found in the standard kit

The kit manual build creates a front wheel-steering model

Width: 81mm

Upgrades to internal mechanics include the souped-up 2

Atlantis Models - 1/300 SSN 571 Nautilus Submarine Plastic Model Kit, Skill Level 2 ASC20518C3 73 teeth is significantly aThis kit measures over 12 inches long, and is molded in dark black gray and clear. Updated decal sheet and new artwork. This kit also comes with a STEM booklet explaining the history of early submarine development. A great learning tool for all. Atlantis acquired this tooling from Round 2. Skill level 2.