Industrial Grade IG45 Planetary DC Geared Encoder Servo Motor 50W 150RPM 12V 23KGCM
Best Dc servo motor of 12V. You can easily control through RMCS-2301 driver with the help of below link.
https://resources.robokits.co.in/dc-servo-motor-driver-s-
tepdirection-input-rmcs-2301/
https://resources.robokits.co.in/brief-description-pid-c-
ontrol-tuning-rhino-servo-drive-rmcs-2301/