Kai DE blades are quite sharp and give a decent shave. The only weak point is it seems to take about 2 shaves per edge before it smoothes out to a pleasant feel. My razor only uses one edge so it is easier to keep track of that count per edge. I wanted to try these out of curiosity and find that there are others that I prefer over these. Your results can vary since every face, beard and blade holder will add variables.

Very good blade, not as sharp as the Feather blades, but very accurate and smooth. If you don't need the sharpest blades that's a good choice. For me I've tried several blades. It's the same category like Perma Sharp or Treet Carbon but not hat level like Feather's first shave.

To me, these blades are like a like a Feather blade on the second shave. They are sharp and smooth. Not sure how many shaves can be had from them since I'm a one and done sort of shaver. These blades are definitely worth a try if you're looking for a blade that is sharp and smooth.

I hate them!!! Felt dull and pull whiskers bad. Irritation around my neck…