Gillette Fusion Power - Box of four replacement cartridges for the Gillette Fusion razor. Compatible with all Fusion razor handles. 5 Blade shaving surface + 1 Precision trimmer for a comfortable, precise shave. Blades are spaced 30% closer together than MACH3 blades to help reduce pressure-with more comfort and less irritation than MACH 3, you barely feel the blades. This creates a shaving surface that distributes the shaving force across the blades, it includes a Lubrastrip which fades from green to white, signalling when shave conditions have been reduced. That’s a great shave.