This is the Savox SH-0261MG Super Torque Metal Gear Micro Digital Servo.

Features:

• Over-spec refined design out performs ordinary micro size servo.
• The metal case design looks awesome and allows for cooler and smoother operating temps.
• Metal gears form a solid framework for precise control and operation.
• Strict production and quality control of plastic components
• Our servos are totally green � from materials to production, these servos are environmentally friendly.
• Ideal for 250/450 class heli's and park flyer airplanes.