This is a MG90 micro servo motor with meta gears used for various robotics and RC drone or helicopter application. It is suitable for micro lifting and operations only.
MG90S is a micro servo motor with metal gear. This small and lightweight servo comes with high output power, thus ideal for RC Airplane, Quadcopter or Robotic Arms.
Used as actuators in many robots like Biped Robot, Hexapod, robotic arm etc..
Commonly used for steering system in RC toys
Robots where position control is required without feedback
Less weight hence used in multi DOF robots like humanoid robots
Can be used in DIY Kit for hobby projects