I open my tool draw just to give these a look and make sure they are safe every night before bed so far. All kidding aside, I have had them over a week and don't know how I managed without them. I have been going through some nightmares timing some Chevy motors in the car, and this is just what the doctor ordered for getting to the distributor bolt. There are plenty more use cases coming down the road for these. They only "issue" may be the lack of a 15 degree bend on the non-ratcheting box end side; but here is my answer to that: (1) You get a ton more leverage with it being straight and not offset by 15 degrees. (2) If I need the offset because i jusssst can't reach the bolt on the flat side, I'll risk breaking the wrench on the flex side and use Gearwrench's lifetime warranty to get it replaced. In either case, it is a fantastic piece for the money with smooth non-binding flex.