These are great for the price point. I’ve only used a couple to tighten a few nuts so I don’t know how well the will hold up trying to break free stubborn nuts and bolts. These aren’t my go to wrenches so I’m not too concerned about putting them thru too much abuse. I’ve found the duratech line to be a good filler brand for tools that you don’t really need that often. Prices and selection are really good. I just wish they had a bit more consistency with the holders for the tools. Metric and SAE of these came in different style cases, one a roll and the other in foam. This is my only big complaint.