YOD51B Brand: PowerHD. Model: HD-1201MG. Dimension: 40.7*20.5*39.5mm. Supply voltage: 6.0V. Stall Torque: 6.7kg.cm. No load running speed: 0.14sec/60°. Storage temperature: -20℃-55℃. Dead band width: ≤4us. Package Details Weight: 90.95 g Size: 8*7*5 cm Package Includes 1 × Analog Servo