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Almost everything I said about the BlackLaser hex keys applies here, because the design and the tool holder are identical. Same Hex-Plus profile that grips across the screw instead of the corners, same ball ends, same color-coded sleeves, same well-made holder. The difference is the steel. These are stainless, and that buys you two things.
The obvious one is that they will not rust and they always look nice. The bigger one, and the reason I actually bought them, is magnetism. If you ever work on systems that use magnets, or you are handling magnetized fasteners and you do not want that magnetic pull transferring to your tool, stainless saves you from it. I bought these because I was doing a run of assemblies built around large rare-earth magnets, and these made my life a lot easier. A regular hex key turns into a problem fast when it wants to grab every bit of steel near it. Stainless just does not care. It also will not transfer rust onto a clean or stainless workpiece, which matters on the right job.
Same buy-once logic as the rest of the Wera L-keys. They cost a bit more than the BlackLaser set for the stainless, and they will last an incredibly long time even under heavy use, longer than most people will ever need. I bought this one in metric, which is what the link points to.
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