FEETECH FS5106R (2 Pack) - 83 oz-in (6 kg-cm) | 360° Rotation | Continuous Rotation Robotic Servo | by himalayanelixir

Least expensive standard size continuous servo I found. Zero adjustment is touchy but works well overall for the price. I am using several of these on an Arduino project. I've put a couple through stress tests and none have failed.

Ages 144 and up lmao