HBL960 Swash servo specs:Torque: 13.6 kg-cm (6.0V) / 17 kg-cm (7.4V) / 18.6 kg-cm (8.2V)Speed: 0.12 s (6.0V) / 0.10 s (7.4V) / 0.09 s (8.2V)Weight: 70.15 gDimensions: 40 x 20 x 40 mmOperating Voltage: 3.5 - 8.4 V DC Volts ( 2S Lipo un-regulated)Working frequence: 1520µs / 333hzDead band: 0.0008ms (Default)Bearing Type: 2BB Motor Type: 4-Pole Brushless MotorGear Type: Chrome-Titanium alloy gearHBL990 Tail servo specs:Torque: 4.7 kg-cm (6.0V) / 5.8 kg-cm (7.4V) / 6.3 kg-cm (8.2V)Speed: 0.040 s (6.0V) / 0.036 s (7.4V) / 0.030 s (8.2V)Weight: 70.55 gDimensions: 40 x 20 x 40 mmOperating Voltage: 3.5 - 8.4 V DC Volts (2S Lipo un-regulated)Working frequence: 760µs / 560hzDead band: 0.0008ms (Default)Bearing Type: 2BB Motor Type: 4-Pole Brushless MotorGear Type: Chrome-Titanium alloy gear