Powerful use on a daily basis at work poses no problems. On 3/8 to 1/4, a perfect attachment and a strong snap on impact.
Finally, a complete ratchet adapter kit at a reasonable cost. A must-have for tool enthusiasts. A nice set that will fit most of the situations needed. Each piece is labeled with its size. Tolerances appear to be adequate. Ball checks are very strong
I've used them on my impact tools and they've held up well so far. So far, the money has been well spent.
I used these for an impact wrench, so they get five stars from me. I've used them a lot and they've done a great job. I haven't had to buy any additional adapters because they cover almost every available hand.
The material is sturdy, and the heads are well-fitting.