Gillette Fusion5 men’s razor blade refills feature 5 anti-friction blades for a shave you 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 men's razor blade refills fit all Fusion5 & Fusion5 Power razors. Gillette razors, formerly called Gillette Fusion.