I use this for all household HVAC. I would give 4.5 stars if I could. I can fit two drill bits, two drill bit cases, a hammer, a multimeter, 8 small hand tools, a headlamp, gloves, a pipe cutter, and a wire nut organizer in this thing, not to mention what's outside. The only reason I'm not giving it 5 stars is because it doesn't have a rubber boot on the bottom. It is great. Thick - won't pierce your back - and easy to carry. Not to mention no tool leakage. If you need to carry your tools in a tote bag, consider this bag. A little heavy, but that's the point. It's solid, doesn't fall off and can hold any tool I need other than jigs and my hands are free anyway.
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