This little Metal Geared Servo is great. We use to pay over three dollars for the old 9 gram plastic geared servo. Therefore this servo at just over three dollars a servo when you buy Ten is good value. If you buy the on a special even cheaper. May I add I have notice that the screw holding the servo horn on is not a self tapper (as in the plastic geared servo). It is a fine thread (see pic). Lastly you only get 3 horns but they will cover most needs (See PIC).

Fantastic quality, great 90 degree precision Αrrived very quickly, everything works perfectly, very good packaging