The clamp is made of relatively thin sheet metal, which promises no grip. It is difficult to reliably hold a large briquette since the pliers is not rigid enough. Rösle-turner has two-three times as much steel, is very robust and costs the same.
The realisische price of these pliers is approx 4-5 EUR. And I would say: take what better. In the article, unfortunately is not with Rösle expected quality.