BW&reg; 2Pcs ES08A Mini Analog Servo Mg90 for RC Airplane Helicopter Trex Align 450 Operating voltage: 4.8V~6.0V Operating speed: 0.12sec/60 at 4.8V; 0.10sec/60 at 6V Torque: 1.5/1.8 kg.cm (4.8V/6v) Gear Material: Plastic Connector type: Futaba/JR compatible