Premium Double Edge Blades - Swedish Steel Premium Blades for Safety s and Straight Edge s - 20 Packs of 5 Blades (100 Count)

In what country are these manufactured?

Blade for head hair trimmer

Do these razors work on a Leaf razor?

I've been using feather DE blades since 2016. I'm just now running low. can anyone compare them? They're about 9cts more costly.