Those are either a white label WD Velociraptor, or perhaps drives salvaged and refurbished post-flood in Thailand. I am very familiar with the WD Velociraptor drives 300GB and above, but I have not seen any 120GB units. These don't look much like the 300GB and 500GB WD units I have used. Some differences in mounting points, top layout, etc.
Those are also 'enterprise' class drives, meaning they are 15mm high among other things. You can see that in the pictures. However, being 15mm high they are too thick to fit in most laptop drive bays.