This high-quality carbide turning insert is truly exceptional for processing stainless steel. I have been using it in my shop for over a month now and it has consistently delivered excellent results. The finish it produces is smooth and polished, and the insert lasts a long time before needing to be replaced. I have used other inserts in the past, but this one stands out because of its longevity. It holds up well even when working with tough materials and high speeds. Additionally, it has a great chip control that makes the machining process easier and more efficient. Overall, I highly recommend the SNMG 431 carbide turning insert for anyone in need of a reliable and durable tool for processing stainless steel. It is definitely worth the investment and will deliver exceptional results. Five stars!