9g Metal Gear Micro Servo (1.8Kg ) - DFRobot

This mini metal servo is quite impressive, it does quite the job for a large range of tasks. With metal gear, it could gives you a 1.8kg*cm torque.
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Servo DFRobot SER0049 - micro - 9g 180 degrees Botland - Robotic Shop

This is the most mini servo. Only weights 9 gram and gives you a 1.6kg.cm torque. Pretty strong regarding its size. Suitable for Beam type robot.

9g micro servo (1.6kg) DFRobot

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Feature, Working voltage is 4.8-6V, Built-in anti-blocking algorithm is more durable, Optimize the design of metal gears to make the operation more

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360 Servo China Trade,Buy China Direct From 360 Servo Factories at Alibaba.com