Gillette mach 3 turbo replacement blades 4 pack for the gillette mach 3 turbo razor are equipped with comfort edges to give a clean and smooth shave made with soft protective micro fins to guard the skin for a close shave with less irritation even when shaving against the grain with anti friction coating on blades all mach3 cartridges fit all mach3 razor handles features indicator strip to alert you when to change cartridge nano thin blades for a closer shave up to 100 redness free