I still find the shave of my new MG1199 one-headed electric head razor really rough, even after a few weeks. I had a brainwave, and removed the head of the razor and looked at the underside. I then took the head of my nine-headed electric head razor and removed it, as well, and looked at the underside, too. Both heads have the identical triangular piece of plastic underneath, so I took the head of the nine-headed electric head razor and put it in the body of my MG1199 one-headed electric head razor and it fit perfectly. This was a perfect solution because replacement heads for the MG1199 one-headed electric head razor can't be found online anywhere. Now I'll use the nine-headed electric head razor's head on the body of the MG1199 one-headed head razor.