The HS-5056MG Premium Digital Feather Servo is the perfect choice for larger indoor R/C, hand launch gliders, small electric Park flyers, and can handle the duties of smaller electric 3D aerobatic aircraft as well. Combined with a programmable digital amplifier, metal gears, and precision components that have been engineered to provide long lasting trouble free service, the HS-5056MG sets the standard for Digital, heavy duty, ultra micro servos. SpecificationsMotor Type:3 PoleBearing Type:Top Ball BearingSpeed (4.8V/6.0V):0.11 / 0.09Torque oz./in. (4.8V/6.0V):21 / 25Torque kg./cm. (4.8V/6.0V):1.5 / 1.8Size in Inches:0.88 x 0.45 x 0.94Size in Millimeters:22.35 x 11.43 x 23.88Weight ounces:0.45Weight grams:12.76 Spare Parts55412 Case Set