It is from Tmart:
Here is my thread on it 3 X D cell X2 Zooming Light @ Tmart .
They have the same thing with a brand name on it for more money. I may have been lucky to get one in good condition.
Unlike the driver, the tail spring was simple, so I did the standard modification on it.
I complained to Battery Junction that the cells were old and one measured way under capacity, so they sent me a fourth one.