1.Light weight and high torque: small size 2.High Speed: 0.12sec/60 during 4.8V voltage and 0.10 sec/60 during 6V input voltage. 3.Suitable for 12428 12423 RC cars. 4.High quality and , equipped with Plastic gear, accuracy and not easy to be planished. 5.Easy to install, save your time and extend the of your car. Bearing: 2BB Dead band: 2s Working frequency: 1520s / 330Hz Stall Torque (4.8V): 3.35kg.cm Stall Torque (6V): 4.52kg.cm Dimensions: 3.7*1.6*3.0cm Connector Wire Length: 150mm Colour: Black material: plastic Package contents: 1* metal plastic servo Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.