All New High Performance S8911 Servo with XBus Programmable 

[Torque]464.5 (6.6V) / 520.8 (7.4V) / 591.2 (8.4V) oz-in
            33.4 (6.6V) / 37.5 (7.4V) / 42.6 (8.4V) kg･cm
[Speed] 0.15 (6.6V) / 0.13 (7.4V) / 0.11 (8.4V) Sec/60°
[Dimensions] 1.57 x 0.79 x 1.59 in / 40 x 20 x 40.5 mm
[Weight] 2.71 oz / 76.9 g
[Voltage Range] 6.0V-8.5V
High Torque Type
Slow start function
Full Metal Case
All Metal Gear
With Bigger Ball Bearing for Upper ( Double)
Compatible with any radio using PWM control
XBus compatible allowing 120 to 180 deg travel
Slow start feature
You can adjust Dumping,Hold,Deadband...etc