Are you sure you want a wrench and not a nut driver? At 2.5mm, something that grabs all six sides might give better feel. I have and use both. For really small stuff, I like the driver. The drivers look like a jeweler's screwdriver.
They are Sears Craftsman lifetime and were bought a long time ago. The working end of the drivers is not chromed. Of course, Craftsman tools are now made in China and sold by a variety of places, including Lowes. I would check them out. Wiha is known as a quality brand. I have a few of its screwdrivers and like them. They are pricier.