It looks to be this one (which has as much documentation as you are likely to get on the web page under description, more than most boards like this from Ebay 
):
http://www.icstation.com/l298n-channels-step-motor-driver-module-robot-p-3190.html
a quick google search didn't turn up a Fritzing part for it. so you would probably have to make one for it after figuring out a schematic by tracing the leads on the board.