From the manufacturer's website:
Gillette Fusion5 Power men's razor blade refills feature 5 anti-friction blades for a shave you can barely feel. The Precision Trimmer on the back is great for hard-to-reach areas and styling facial hair. The lubrication strip fades when you are no longer getting an optimal shave. One razor blade refill equals up to one month of shaves. Fusion5 Power men's razor blade refills fit all Fusion5 & Fusion5 Power blades. Gillette razors, formerly called Gillette Fusion.
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.