These are advertised to fit my Norelco electric razor, but they didn't fit.
I had to take the razors out of the heads and put them in my old heads because the new heads would not seat right in my razor. they were advertised as a fit for my razor but they did not. i'm still able to use them but it was a lot of work and new razors inside old heads is probably not the beast thing for the life of the razors.
Rating: 3 stars