This is the Hitec HS-65MG Mighty Micro Metal-Gear Servo with the Universal connector. The universal connector allows this servo to work with all current JR, Hitec, Futaba, and Airtronics Z radio systems and wiring.
HS-65MG has long lasting and durable metal gears
One of the slimmest micro servos available
High efficiency Neodymium magnet motor
The HS-65MG was created for fast Park Flyer models, electric micro planes, MAVs and 1/18 scale cars, and features a top ball-bearing for long life and positive centering
(1) HS-65MG Micro Servo
(4) M1.7x7 servo mounting screws
(1) Two-sided servo horn
(1) One-sided servo horn
(1) M1.7x3 servo horn screw
(1) Four-sided servo horn
Speed: 0.14 / 0.11 sec @ 60 deg.
Output Torque: 24.99 / 30.55 oz.in (4.8v/6v)