Canon RK2-1331-000 is a DC stepping motor. The listing identifies it by this exact Canon reference and motor description, making its basic purpose clear: it is a motor component for applications that call for a DC stepping motor.
The confirmed details are deliberately straightforward: this is a stepping motor, and its listed type is DC. The source provides no supported device compatibility, dimensions, electrical ratings or package contents, so the description is limited to the identified component and its stated type.