1 razor/1 cartridge. Closer shave, less irritation (vs. Sensor 2 disposable), even for sensitive skin. Better, even on the 10th shave (Overall preference vs. Sensor 2 disposable). New look. DuraComfort blades. DuraComfort blades for long lasting comfort. Extra-lubricating gel strip (vs. Mach3) glides to help fight irritation. Pressure adjusting pivot for an easier shave (vs. Sensor 2 disposable). 2x more skin guard fins (vs. Mach3) for a smooth shave. Responsive blade suspension for a comfortable shave. All Mach3 cartridges can be used on all Mach3 razors. Gillette - The best a man can get. www.pg.com. Comments? 1-800-Gillette. www.Gillette.com. Handle made in Mexico.