HS-646WP Water Proof Analog Servo (IP-67 Rated)

Steering rack is black graphite for durability light weight

and became a very effective base machine fore these Championships

Upgrades to internal mechanics include the souped-up 2

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

Atlantis Models - 1/300 SSN 571 Nautilus Submarine Plastic Model Kit, Skill Level 2 ASC20518C3 HS-646WP Water Proof Analog ServoThis 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.