I have to agree with one of the previous reviewers in that the arms break off due to the material used in the design. It is too brittle to last. I too have had to replace a the part more than once!
I've replaced the head guard on numerous occasions, which is why I have bought 2 on this occasion, as I know one will break in time without any mis-use. The shaver itself is of high quality, however this accessory is not of the same quality!
Brilliant service just wanted a new cover for head of shaver purchased at Christmas, all arrived promptly.