This is the Futaba BLS571SV Brushless S.Bus2 Programmable Digital High Voltage Low Profile Car Servo.
Specifications:
- Speed:
- Torque:
- @6.0V: 130.6 oz-in (9.4 kg-cm)
- @7.4V: 152.8 oz-in (11.0 kg-cm)
- Size: 40.5x20x25.4mm
- Weight: 41g
- Rated Voltage: DC 6.0V-7.4V
- Operating Voltage: 4.0V-8.4V