Mentioned on another thread, but what is this. I use them all the time, so are they faulty or what?

here

arent the powerlock ones one time only unlike the powerlinks?

Thank you. Only 10 speed, so presumably mainly roadies will be affected.

firstly it's a 10 speed issue. secondly it's very few chains.

Had a 9 speed go on me although it was not new. Cut my stomach on the stem I hit it that hard and then gashed my knee open on the chain ring when I couped. 🙁
Still use them.