12PCS MG90S Servo Micro 180° 9G Servo Motor Geared Micro Servo Motor 9G Smart Robot Compatible with Raspberry Pi Project Car Helicopter Airplane Boat (180 Rotating)

I purchased these servos to drive wheels in simple robot projects powered by microbit controllers. Found lots of projects online that use 360 degree continuous servo motors to power wheels, etc, these were perfect for my purpose, and at current prices due to global trade issues, these were available for a reasonable price. Also, at least the top gear on these servos is metal, and threaded to take a 2.5 mm small bolt. Very happy with purchase.

These are typical, no better or worse than others. All 12 that were shipped work perfectly. I do like that the plastic gears will tolerate a bit of "grinding" if the load is too heavy, but otherwise these are typical but very good for the price.

Horrible reaction time, glitches. Tried the same reciever with quality servos just to see if it was the reciever and it worked flawless. WOULD NOT RECOMMEND THESE SERVOS IF YOU LIKE YOUR PLANE.

Although many people are saying there are some plastic gears in there, the main one is metal. It has worked well for my RC plane projects, and have taken a beating, but still work just fine.

These are not great quality servos. From my experience they have about a 5-10% DOA rate, and they also do not last as long as higher quality servos, even if they are not DOA. However, they are cheap as heck. If you need a bunch of cheap servos to do the job of cheap servos, this is a fine deal. $1.58/servo is throw-away money, but these are throw-away servos, you get what you pay for. If you want high-quality, precision servos for critical applications or use in twitchy or valuable flying models, look elsewhere.

I used the servos to control model railroad turnouts and so far they are working well. They came nicely packaged in and secure box. I tested all of them and they all worked and are working well on my model railroad. Good product, good price and they arrived on time.

Cannot go wrong with metal gears. Use these in my foamie airplanes. Good price.

Good to tinker with but get better servos for serious projects - they burn out even under low load use and you don't want one to fail in flight.