Specs:
Model: DS939HV 
Operating Voltage: 6.0V / 7.2V
Operating Current: 200mA / 240mA
Operating Speed: 0.13sec.60/ 0.12sec.60
Stall Torque: 2.6kg.cm / 2.8kg.cm
Size: 22.5X11.5X24.6mm(0.88"x0.45"x0.96")
Weight: 12.5g
Dead Band: ?3uSec
Operating Travel: 40/one side pulse traveling 400us
Potentiometer: 2 slider/Direct Drive
Ball bearing: MR85
Gear: Metal
Coreless
Connector wire: 215mm
Operating Temperature Range: -20C+60C
Spline count: 21