Review (1/5): These are painful, badly made knock-offs. Do NOT buy.
These are not genuine Norelco blades, although they have gone to pains to copy the logo. The box is non-descript and simply says "Shaver Replacement Blades." They arrived with some of the time blades bent. There are gaps in the teeth. These are utterly terrible and very painful to use. Going to see if I can refund or return.