SS-class Astronomic Droids are surface-specific, hence the name, which means that they are optimized for surface engineering and repairs. They were mainly manufactured and used with Gralage Advanced Productions. With their sevral retractable mechanical arms and a few biometric sensors located around the body, they act out a task very efficiently. They can retract a short-range life signs scanner, Gamar or Radar that go up to 500m. They also have an advanced electro-coil to counter other droids.