12V DC Motor 251RPM w/Encoder - RobotShop

DC 6V 12V Micro Motor w/ Encoder, 6V 7800rpm - RobotShop

12V Metal DC Gearmotor w/Encoder (43.8:1, 251RPM, 18Kg.cm) - DFRobot

Pololu 12V 100:1 Metal Gear Motor HP w/ 64 CPR Encoder - RobotShop

12V, 313RPM 416.6oz-in HD Premium Planetary Gearmotor w/ Encoder

Devantech 24V, 49:1 Gear Motor w/ Encoder - RobotShop

BEMONOC Encoder Metal Gearmotor 12V DC High Speed 130RPM Gear Motor with Encoder for Arduino and 3D Printers

6V, 120:1, 160RPM Micro DC Geared Motor w/Encoder - RobotShop

Devantech 24V, 49:1 Gear Motor w/ Encoder - RobotShop

Micro 6V 160RPM 120:1 DC Geared Motor w/ Encoder - RobotShop

Devantech 12V, 30:1 Gear Motor w/ Encoder - RobotShop

12V 120 RPM DC Motor 64:1 - RobotShop

DC 6V 12V Micro Motor w/ Encoder, 6V 7800rpm - RobotShop