I used these razors as they were cheap, simple, and disposable. The shave they give is poor, and each blade only really lasts a single shave before it's totally useless - which I accept is what's supposed to happen. There are no safety wires or anything similar which makes it very easy to cut yourself, and I found when using the razor I almost always gave myself barber's rash on my neck. I honestly can't see any redeeming features with these, since I reckon that you'd be paying about the same as for a decent razor like the Mach 3 once you'd worked everything out.
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