
Tools seem sturdy; I assume they are durable but can't know for sure at the moment. The fit is satisfactory, the bushings are a bit thicker so not always suitable for very tight spaces, but that should guarantee their strength. Just take a look. I bought it because of the "pass-through" design; I've worked with cars and bikes many times and it would be very helpful so I'm glad I have them. But they cost $30; I think it's slightly more than comparable (and higher quality - artisan etc) sets, so the cost is fair at best. It's a decent thing; seems to be holding up well. The connectors don't snap into place, however, so when you flip the case open the connectors roll up and you'll need to reattach them to make sure you remove everything from the work area (and to keep the case open.)

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