fresh blade. Better shave. Fits all Mach3 razors. Best Mach3 Shave. Power Glide Blades: Patented blade coating produces the smoothest blade surface of all Mach3 blades for incredible comfort. Combine with the M3Power razor for an incredible shaving experience and Gillette's best Mach3 shave. M3Power cartridges can be used with any Mach3 razor. Indicator Lubrastrip: Contains Vitamin E and aloe. Battery not included.