SOME SELLERS ARE LISTING THEM AS GILLETTE MACH3 TURBO BLADES. THE WAY TO TELL IF THEY ARE REALLY GILLETTE BLADES IS:

1. THE UPC NUMBER ON THE BACK OF THE REAL ONES STARTS WITH A 4. THE FAKE ONES STARTS WITH A 1.

2. THE WRITTING ON THE BACK OF THE BOX I SNOT IN ENGLISH.

3. THE AREA THEY CAME FROM. GILLETTE IS BOSTON. THE OTHERS ARE LONDON, GERMANY, CHINA, ETC.

HOPE I HELPED YOU TO SEE THE DIFFERENCE.