Team Associated 29132 XP SHV1504MG High Voltage Metal Gear Servo Torque (oz-in) 6.0V/7.4V: 41.7/54, Torque (Kg-cm) 6.0V/7.4V: 3.0/3.9, Speed (sec/60) 6.0V/7.4V: 0.18/0.15 , Weight (oz/g): 1.81/51.4 Dimensions (mm) LxWxH: 40.4 x 20.0 x 37.9, Gear Type: 2M/2P, Bearing: 2B, P=Plastic, M=Metal, B=Bushing Reliable, high-torque motor, 7.4V LiPo receiver battery compatible Precision manufacturing and assembly, heavy-duty metal gears (MG version only) Impact resistant material, high-tech, lightweight design