Item Name: Control Robot Indoor Flight Mini S0009M 9g Digital Servo Servo Servo Motor. Torque: 1.7 kgf.cm at 4.8V 1.9 kgf.cm at 6V Working frequency: 1520 s / 333hz Motor type: core motor No load speed: 0.11s/60 at 4.8V 0.09s/60 at 6V Size: 23 * 12 * 27.3mm 100% brand new and high qualityGear type: metal gear Product weight: 13.5g Operating voltage: 4.8V ~ 6VDC Packaging includes:1 x 9g metal gear servo Notes.1.1cm=10mm=0.39inch2.Due to manual measurement, please allow 1-2cm error. Please make sure you don't mind before