2/4/6Pack Mini Digital Servo Micro 3.7g for Control Aircraft Helicopter Boat Car Features: Use for rc plane, helicopter, boat, car, etc. The 3.7g servo is coreless, gear precision, high torque and low noise. Made of all nylon gear, durable for used,long service time. Connector wire length up to 150mm, convenient to use. Specification: Weight: 3.7g Servo Type: digital servo Motor Type: hollow cup Use: vehicles & remote control toys Line Length: 150mm Dimensions: 20.0 x 8.75 x 22.0 mm Torque: 0.5kg/cm (at 3.6V) 0.7kg/cm (at 4.8V) Speed: 0.13sec/60°(at 4.8V) 0.10sec/60°(at 6V) Working Voltage: 3.6v-4.8v Operating Temperature: 0 °C -60 °C Standard Signal: 1000 to 2000 microseconds Working Angle: 90° Current: <300mA Dead Zone Setting: 4 usec Operating Speed(at no load): 0.15 Sec/60° 0.1 Sec/60° Running Current(at no load): ≤ 10 m A ≤40 m A Stall Torque(at locked): 0.42±0.1 kg-cm 0.6±0.1 kg-cm Stall Current(at locked): ≤60 m A ≤200 m A Package Included:  2/4/6 pieces 3.7g micro servo according to your ordering.