KST BLS815 V2: an High Voltage standard size brushless servo produced by KST for 550/600/700 helicopters swashplate use.
Integral aluminum case, metal gears, double ball bearing and high performances.

Specifications:

Torque: 20kg/cm (8,4V) / 17Kg/cm (7,4V) / 14Kg/cm (6,0V)
Speed: 0,07s/60° (8,4V) / 0,08s/60° (7,4V) / 0,09s/60° (6V)
Voltage: DC 6V à 8,4V
Frequency: 1520us/333Hz
Size: 40,5x20x38 mm
Motor type: brushless
Bearing: dual ball bearing
Weight: 73g