Looking for a good continuous-rotation servo? The Grand-Wing Servo GSV0008A is a well proven unit!
This tiny unit from GWS comes with a ball-bearing supported shaft, Futaba connector, and accessory kit.
This modified servo is great for simple projects and lightweight robots.
The VS-9 Pico Servo is a strong little servo motor for it's size, it's like that little kid that the neighbourhood bully used to pick on that ended up giving the bully a black eye!