The MG90S servo is a high-performance gear motor designed for precision and durability, making it ideal for high-end applications such as robotics. It features metal gears for enhanced durability and over-torque protection to extend its lifespan. With the ability to rotate approximately 180 degrees, it is versatile enough for use in various robotic projects, including spider robots and biped robots. The servo comes with 3 arms, screws, and pre-soldered female wires for easy connectivity.