I can recommend everyone this thing to renew after a certain time on his razor - At first I thought I would have to renew the shaver after I've always howling mowed lately shaving the face from the skull and then red as a lobster, and even with cuts (shaving foil had two holes - God, I cursed the quality - even in retrospect makes sense but the wear) to leave the house. Until I made me even bother to look for replacement parts.
The delivered parts look modified, which is certainly due to continuous product development.
Short time made test Shave: Finally back shaved painless and smooth! Krass - I knew no longer ...
I paid 26,90.- in free delivery. (Is recommended approximately every 18 months - a pity that I have read so only after three years, or - ouch!) With regular exchange obtained for a constant Rasierqualität possible over a long period. In this respect, the price is somehow just okay for me - are at the recommended replacement interval of about 1.50 per month. Blades are now times blunt, and a shaving foil also holds probably not forever. I have indeed noticed.
Small drawback: Had spare parts 31S appointed and have received 31B; only had Schreck moment, but then found that "s" apparently for "silver" and "b" apparently for "black" is, but otherwise has identical fit. May look a bit strange, with the black portion on the silver head, but I pupsegal.
Therefore, no deduction of points, but continued enthusiasm whether the fast delivery, the now missing Rasierschmerzes and smooth grimace! :)
Edit: I read here about confusions in suitable spare parts for various models. So, with my 370 (Type 5738) is engraved on the back in the plastic: "Use Parts 31S" - so it was easy.
I do not know whether that with all models is so ... but as a tip maybe useful.