Gillette Mach3 razors for men feature stronger-than-steel blades that stay sharper longer (vs. Sensor3). with sharper blades (first 2 blades vs. Sensor3), the refill is engineered to last 15 comfortable shaves. This Gillette razor features a Lubrication Strip that glides to help protect your skin from redness and a micro Fin skin guard that stretches the skin, and prepares hair to be cut. The Mach3 mens razor features a premium handle, expertly balanced and weighted for a great shaving experience. All Mach3 mens razor handles fit all Mach3 blade refills.