TGY-390DMH High Performance Digital Servo (Extra Strong) 5.4kg / .11sec / 22.5g

Specification:
Weight: 22.5 grams / 0.79 oz.
Dimensions: 29 x 13 x 30 mm / 1.14 x 0.51 x 1.18 inch
Torque @ 4.8V: 4.6 kg/cm , 64 oz/in
Torque @ 6.0V: 5.4 kg/cm , 75 oz/in
Speed @ 4.8V: 0.14sec / 60 deg at no load
Speed @ 6.0V: 0.11sec / 60 deg at no load
Spline Count: 25
Gear Material: Plastic
Motor: Coreless

Twin ball bearing and full metal gears. High performance servo recommended for Airplane & Helicopter (Tail)