I've tried these in multiple razors. Even something tame like a Merkur 34C still results in weepers. It's amazing how different other people's experiences can be. Feather/Astra/Derby have all worked fine for me. These have just been terrible. Tugging, uncomfortable, and cuts galore. Even with the lightest of touches, I've not been able to get a satisfactory shave with them. Even when I started out as a new wet shaver, I never had cuts like this with Feather blades. YMMV.