Klein Tools 70550: The Hex Set I Actually Carry
Look, I’ve bought plenty of hex sets that ended up living in my bottom drawer. The Klein 70550? It’s been on my belt for two years straight.
What sold me wasn’t the “heavy duty” marketing—it was the first time I folded out that extra-long 5/16″ key and actually reached a blower motor setscrew without pulling the whole unit. The SAE sizing covers about 90% of what I hit on residential calls, and the fold-up design means I’m not fishing loose keys out of my bag while balanced on a ladder.
These aren’t the cheapest hex wrenches out there, but they’re Klein—which means when I crank down on a seized screw, something’s going to give, and it won’t be the tool. If you run service calls, you need keys you can count on. These are it.