D3615 Metal Gear Servo - Torque 15KG.cmHigh value, general purpose, standard size servo with higher torque than MG995/6 - 15Kg torque. Easily used with the Arduino Servo library.Features : Dimensions:40 x 40 x 19mmOperating Speed :0.18sec/60° at 6v0.16sec/60° at 7.2vWorking Torque :14Kg.cm. at 6.0v15Kg.cm. at7.2vDead Band Width:4μsOperation Voltage:(4.8-7.2)VMetal GearConnector Wire Length 315mmWeight:39gStandard Arduino LIbrary documented here: Servo Library