They're cheap go ahead and get one. I asked for and got a free wrench when I purchased my icons. If you're going to keep the truck and keep the icons you should have your own wrench, might want to tweak things here and there.
Go to Sears and buy a magnetic driver set. Not only can you use it on other parts of the truck, the driver without a bit in it fits perfectly in the holes on icon co's. Lube up the threads a little and it spins no problem.