This quest was marked obsolete by Blizzard and cannot be obtained or completed.
Use Zorbin's Ultra-Shrinker to zap any kind of giant found in Feralas into a more manageable form. Bring 15 Miniaturization Residues found on the zapped versions of these giants to Zorbin Fandazzle at the docks of the Forgotten Coast, Feralas.
I'm going to have to do something about the giants if I stay out here! They're certainly not good for business, now are they?
I've been working on a variant of a gnomish shrinking ray, but I'm using superior GOBLIN technological advances in its construction! In an effort to avoid inconveniences for myself such as death, I'd like for you to try it out on any of the giants in Feralas. You should find miniaturization residue on them after you shrink them - bring me back some!
Miniaturization residue, I assure you, is a valuable commodity when it comes to engineering! Well, it is valuable in that it helps me make sure the zapper won't do something as disappointing as explode on the user.
Oh, I mean for the zappers other than the one I gave you. Absolutely!
Splendifimous! Not only am I glad to see that you've returned with the residue, but also with all your major appendages intact! That is, well, there was never any danger in using the Ultra-Shrinker, now was there!
I do appreciate your effort on my behalf, <name>. Truly, you are a friend to goblins everywhere. Accept this as a token of my appreciation!