The Gillette Mach3 men's razor blade refills are engineered for a precise, classic shave you can trust, with three stronger-than-steel blades that stay sharper for longer (vs. Sensor3). All Mach3 blade refills fit all Mach3 handles. • Engineered with precision cut steel for up to 15 shaves per blade • 3 blades for a classic smooth shave • Stronger-than-steel blades stay sharper for longer (vs. Sensor3) • 20 Pack Brand: Gillette Type: Razors Product Features - 3 Blades for a Smooth Shave - 15 Shaves per Blade - Stronger than Steel Blades