The AndyMark 12V Gearmotor w/ 2 Channel Encoder 245 rpm is an ideal choice for small robotic projects requiring compact and efficient motors. This gearmotor features a 12V motor with a no-load speed of 245 RPM, making it suitable for various applications. It includes a 2-channel encoder, enhancing its precision and control capabilities. The motor is designed with a 4 mm D shaft and is not permissible for use in any FIRST programs.