I have just been informed (by Martin Annis) that some Carabiners sold under the Simons name by Decathlon are being recalled in America due to a risk of failure leading to serious injury or death.
The Carabiners are called “Rocky” and are blue in snap gate and yellow in screwgate. Whilst it is an American recall, I note that the blue Karabiners are currently on sale in Decathlon UK (possibly a different batch of course.)
If you have any Decathlon Karabiners that might be called “Rocky” and are blue or yellow I would check up with Decathlon before using them again.
For more info on the American recall see https://www.cpsc.gov/Recalls/2019/Decathlon-USA-Recalls-Carabiners-Due-to-Risk-of-Serious-Injury-or-Death