Since its introduction, the HS-55 has set the standard for affordable performance, offering precision components that have been engineered to provide long lasting trouble free service!Enter the new HS-5055MG digital, metal geared version... with this new servo Hitec takes ultra micro performance to the next level without breaking the bank. The new HS-5055MG is a perfect choice for ” smaller” high performance electric helicopters, aircraft and sail planes.Features: Digital Circuit for Increased Performance and Holding Power Smooth Coreless Motor Rugged Metal Gears Standard Programmable Digital Circuit Economical, Feather, Digital Servo Specifications: Motor Type: Coreless Bearing Type: None Speed (4.8V/6.0V): 0.20 / 0.17 sec @ 60 deg. Torque oz./in. (4.8V/6.0V): 18 / 22 Torque kg./cm. (4.8V/6.0V): 1.2 / 1.5 Max. Voltage: 6.0V Size in Inches: 0.89 x 0.45 x 0.94 Size in Millimeters: 22.61 x 11.43 x 23.88 Weight ounces: 0.33 Weight grams: 9.36