The  12V Stepper Motor 28BYJ-48 :
Voltage: 12V
Diameter: 28mm
Reduction ratio: 1/64
Step angle: 5.625 x 1 / 64

Feature of the Driver:
Stepper motor driver board with ULN2003.
A, B, C, D four-phase LED indicates the status of the stepper motor work.
Stepper motor with a standard interface, when used directly pluggable.
5 Line 4 phase can be driven by ordinary uln2003 chip can also be connected in phase 2 development board.
It's used for supporting the use of a direct plug and easy to use stepper motor used in the development board.

Package Included:
 ULN2003 Stepper Motor Driver Board Module
 12V Stepper Motor 28BYJ-48