Hazet 2100/6KH Folding Hex Key Set: A Six-Pack of Hex Keys With a Clever Ejector

Introduction

So much of the world seems to be held together with hex bolts, and having the right set on hand is essential. The tricky part is the set itself: carry only one or two keys and odds are the one you actually need is the size in between. That is where a compact folding set like the Hazet 2100/6KH comes in. It bundles six key sizes into a single palm-sized tool with one genuinely clever trick: an ejector button that launches each key out for an easy grab.

What You Get in the Set

The part number tells you most of what you need to know. The 2100/6KH is a six-in-one folding set made from chrome vanadium steel, covering 2.5 mm, 3, 4, 5, 6 and 8 mm. There are no skips in that range, so the main metric sizes most people reach for daily are all covered. The keys fold into the housing and sit fairly snug, which keeps them from flopping around when you are inserting the handle somewhere tight.

Hazet is a German brand, and the tool wears a blue housing that fits that heritage. The housing is plastic, and the keys have a slightly thinner profile than some heavier-duty individual keys, but the set feels built to last with proper care.

The Ejector Button: The Main Selling Point

The special feature is the small switch on the side of the housing. Push it up and it launches the key outward so you can easily grab it. Push it from the other side and the key snaps back to the center and seats itself. This matters more than it sounds, because some folding sets are notoriously difficult to pry open: you wedge a fingernail into the slot, fight the key loose, and hope your hands are not greasy.

There is one design nitpick. The ejector button sits on one side only, and it would be nicer on both sides, since it is easy to grab the wrong end or flip the tool around. Still, once you learn which side it is on, popping a key out becomes effortless while the keys themselves stay tight and secure in the housing.

Everyday Use and Handling

In use, the keys sit firmly with very little wiggle. There is a small amount of play right at the center of rotation, but once a key is extended it snugs up again, so nothing rattles or flies around. You get the full range of motion you would expect from a folding hex set, and once a key is pushed fully into position it sits nice and solid, even though the push takes a bit of effort.

The upside of that snug fit is control: you can insert the tool somewhere tight without keys flopping loose. The downside is that individual keys take a firm push to close back in, though the ejector makes getting them back out easy again. If you tighten a slightly loose key by adjusting the pivot, the whole thing can be dialed in so each key pops out easily but stays put during use.

Things to Consider Before Buying

A folding set will never replace a full rack of individual L-keys. For heavy torque work or hard-to-reach fasteners, dedicated keys still win, and some people prefer to just pull the 3, 4, 5 and 6 mm keys out of a bigger set, since 4 mm alone covers a lot of common jobs. The thinner key profile and plastic housing also mean this is a grab-and-go tool rather than a shop-grade workhorse.

That said, this is the kind of tool that earns its keep by being handy. It is the sort of thing you use constantly, sometimes even at the workbench in place of reaching for the right individual tool. If you like German tools and want a compact set that covers the everyday metric sizes without fighting you to retrieve a key, the 2100/6KH is an easy recommendation.

Conclusion

The Hazet 2100/6KH nails the fundamentals: solid chrome vanadium keys, a sensible six-size metric range, and a housing that keeps everything snug. The ejector button is the feature that sets it apart, turning the most annoying part of folding hex sets into a one-push action. It sells for around 26 dollars, and for anyone who wants a genuinely convenient everyday hex set, it seems like a good tool overall.