Get a smooth shave with the Gillette Mach 3 Blades 4S. These razor blade refills feature sharper blades than the first two blades of the Sensor3, engineered to last for 15 comfortable shaves. The lubrication strip glides to help protect your skin from redness, while the microfin skin guard stretches the skin and prepares hair to be cut. Each razor blade refill fits all Mach3 razors, making it easy to replace your blades. The stronger-than-steel blades stay sharper longer, providing a consistent shaving experience. This pack includes 4 Mach3 razor blades, ensuring you have a steady supply of replacement blades.