If you're looking for a more universally useful Klein tool to start your collection, they make a bottle opener with their signature handle.
As an added bonus, then you can confuse your mathematician friends by telling them you have a Klein bottle opener.
More practically, their screwdrivers are worlds better than average. The Phillips head tips are ground properly and are less likely to cam out when you don't want them to. They also make slotted drivers with a cabinet tip. They're sold at Home Depot (in the electrical aisle), so you don't have to hunt down an electrical distributor to get them.
I had to look up the Klein bottle opener for math reasons (https://www.kleintools.com/catalog/branded-collection/klein-...). The description is delightfully understated. e.g., "Professionally designed and rigorously tested by an expert team to handle both foreign and domestic applications"
I clicked on your link, recognized the logo and realized that I've had a pair of klein wire cutters for the last 30 years. They are my favorite cutters, I found them on the ground when I was a kid, in front of the telephone box in our yard:
Klein is for sure world class. I make a point of padding my budget every time I go to the hardware store and now have a Klein for practically any application (automotive mostly) I need.
Other classic Klein tools that I'm aware of are the 11-in-1 screwdriver [1] and the linesman's pliers [2]. The linesman's have many uses including hammering down nails or staples or bashing through drywall. You'll see these tools in a lot of tradesman's bags.
The Wera screwdrivers are also very nice and noticeably better-performing than standard drivers.
Those lineman's pliers are ubiquitous to the point where an electrician on a jobsite can say "hand me those Kleins" and everyone knows they mean the pliers.
the 11 in 1 screwdriver is so useful all around. hands down the best screwdriver to have if you only have one. (i got a full set of kleins many years ago as part of a barter exchange and have nothing but praise to give them)
the socket portion of the 11-in-1 screwdriver is really handy to use for a lot of the things like pc cases since those have a socket head that makes it really easy to screw (or also Phillips if you want). lots of screws have that 1/4" socket.
The 11 in 1 screwdriver is fantastic and pretty inexpensive ($15?). Sturdy and has a nice heft to it. I was helping my mom around Christmas time fix something on her RV and had to use her Phillips screwdriver to do it. It was some no name cheap thing that barely held on to the screw and was in general awful to use. On the way home I swung by Home Depot and picked up the Klein and gave it to her for Christmas(along with other things of course).
I recently got the 4-in-1 precision screwdriver and was disappointed to find the bits were not the relatively standard 9mm, Klein’s are ⅓”. I didn’t even know there was such a thing and now I have a screwdriver that will always be limited to it’s original four functions. Seems like a missed opportunity.
Their screwdrivers arn't as good as Snapon, but neither do they cost a fortune.
My standard commercial job tooling was a side cutter (Klein, or whatever I had at the time), a slotted screwdriver, wire stripper, and drywall knife.
I kept my tools in one pocket of my overalls. I learned pretty quick, I didn't need a bunch of tools to do most run of the mill office wiring.
My "Kleins" were used as a hammer.
Most union electricians really didn't even talk about the brand. They just used their tools.
(Tooling has gotten very good these days though. My days of paying more for a name brand in hand tools are over. I got one, actually two complaints while working on PacPell park. An architect complained to my shop boss over my use of the word "Dykes". My nippers were called dykes by my father, and it stuck with me. The architect thought I was referring to her when I said, "Where are my dykes? He told her that is what some guys we call their side cutters, and everything was fine. The second complain was never tied to me, but I was the one urinating in the finished locker rooms. We were suspose to use the porta potties, but they were always far away, and smelled. Oh yea, my initials are on the top of every locker. I put my initials on the pressed wood before the Cherry laminate went on. When there's a remodel, and those lockers are torn out, they will see my initials. Why? I was bored one morning.)
I don’t have this one but I have a giant Craftsman that I keep in my toolbox to pry or whatever with.
A while back I fell down a YouTube rabbit hole of experienced electricians going through their tool bags and talking about what they had and why. Lots of Klein tools of course, they all seem to use Klein or Knipex (or both). But one guy called out the large flathead screwdriver that you can stick in your bag and use as a makeshift pry bar or chisel or whatever. I had one that came as part of a set from Craftsmen that I never used so I stuck it in my tool box. I’ve already used it a handful of times and it takes up almost no space.
Yup. I have one that gets used anytime I need to pop the cover on my sprinkler valve box. I have to use a smaller flathead to bleed the valves but the giant one pops it open with little effort every time.
I first picked up on them while working in a bike shop. mine kept going dull but my coworker had his klein forever and they still cut stranded derailleur and brake cable cleanly. I used to think dikes were awful due to the poor quality of generics but these are surely worth the $30-35.
As an added bonus, then you can confuse your mathematician friends by telling them you have a Klein bottle opener.
More practically, their screwdrivers are worlds better than average. The Phillips head tips are ground properly and are less likely to cam out when you don't want them to. They also make slotted drivers with a cabinet tip. They're sold at Home Depot (in the electrical aisle), so you don't have to hunt down an electrical distributor to get them.