The Gillette Mach3 Turbo razor blades for men feature 3 DuraComfort blades stronger than steel that stay sharp for longer (compared to Sensor3). With sharper turbo blades (the first two blades compared to Mach3), a Mach3 turbo blade is designed for 15 comfortable shaves. These razor blades feature an extra long lasting moisture strip for optimum glide and micro-fine skin protection fins that tighten your skin and prepare the hair for shaving. All Mach3 blades can be used with all Mach3 handles.