2.5kg Goteck メタルギアマイクロサーボ

The standard translucent blue micro servo is great for small projects, but they're not very strong. I needed something that could move a lever against a trio of springs, but fit within the small space allowed. While a standard 9g servo fit great, it wasn't strong enough. With 2.5 kg-cm of torque, this metal geared servo was exactly what I needed. It's not the strongest micro servo on the market, but it's the strongest micro servo I could find for under $10. Great value, great performance.

Light and reliable, it works

180° (+a few) view, what a treat!

Plenty of torque for the price. Good control, does not overshoot, or resonate under reasonable load. Have to be careful if applying load on axis as the gears might slip/jam.

It much better than : RB-Dfr-124 DFRobot Micro Servo Motor. They feel more solid and also they are quieter. I have not push it to its limits yet but having a metal gear let me think they could support more abuse.