Very reliable blade. It is relatively gentle and does not cause irritation for me. Machines I use are Edwin Jagger DE89, Gillette fatboy from 1968, Muhle R89.
Quite sharp but there are better options in this field.
Consistent quality for years now, perfect for everyday use. It lasts for 4-5 shaves, then it starts pulling.
I recommend it.

Simply put... the best blade by far compared to others... and I have tried almost all of them.

It completely changes the behavior of the razor... it made my rex ambassador soar.

The razor is more important than the machine... or in other words, a machine without the razor that makes the difference performs at half its potential.

Too soft blade. For my beard, it lasts only one use and then it pulls a lot, so I struggle. Strangely, I didn't have any irritations and compared to Astra Platinum, they don't pull. But the price, guys, now for a close shave, etc... with an aggressive closed comb head and 2 passes, I thought I would never remove a hair again. With a simple closed comb, it does the job, just.

Want a close shave? The ideal solution. Aggressive, requires experience, not suitable for beginners, but if you have experience and want a close, clean shave, it is one of the top choices!

Very compatible with my skin and many others. It is sharp but not among the TOP choices. Gillette in general is a guarantee.