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Futaba Systems S-U300 Standard Servo | Tower Hobbies
Amazon.com: EX ELECTRONIX EXPRESS Standard Servo Motor, 3kg.cm Torque at 4.8 Volt / 3.2kg.cm at 6V, Weight: 36g, Size: 41x20x38mm by Electronix Express : Toys & Games
Standard servo - TowerPro SG-5010 [5010] : ID 155 : $12.00 : Adafruit Industries, Unique & fun DIY electronics and kits