I've used these for a long time. They come in several sizes, including a half wide that's perfect for wire nuts, push ins, screws, and such. The large deep one will carry a good assortment of breakers or my service entrance crimps (#4 to 4/0 stuff) and covers. Love the clear covers. Haven't managed to break one yet


I had one of the big ones for 6 or 7 years (it's 10 now), and when I went looking for more (several major companies put their name on these in a different color) I found several sizes at Harbor Freight and for about a fourth the price when bought in a set on sale. Quality is the same (go figure). I don't like the mix of bin sizes they come with in the shallow ones but after buying a couple of sets and some loose ones I have just about a perfect assortment for what I carry in each one.
Tools are now in canvas bags with hard bottoms and a couple of totes. My back said NO to tool belts a long time ago. The pockets on my bibs take care of everything else.
I love metal tool boxes, except for the weight, cost, and the fact they damage things around them when another trade kicks, drops, or knocks it off something - and then trying to get it to close right after.