The Towerpro SG90 is similar in size and weight to the Hitec HS-55, and is a good choice for most Parkflyers. We've used this servo in lots of different models, including the GWS Slow Stick, Eflite Mini Ultra Stick, GWS Corsair, GWS Formosa, and World Models 48" Piper Cub. If you are looking for a servo that won't break the bank, yet gets the job done reliably, consider theTowerpro SG90.
The Towerpro SG90 has the universal "S" type connector that fits most receivers, including Futaba, JR, GWS, Cirrus, Blue Bird, Blue Arrow, Corona, Berg, Spektrum and Hitec.
The wire colors are Brown-Red-Orange: Red = battery positive Brown = battery negative Orange = signal
We now carry the DuBro Micro Servo Arm XL that fits this servo!