Gillette Mach3 Turbo razor refills, 3 blades turbo blades that provide glide and comfort. Mach3 incorporates twice as many protective strips for the skin, providing a smoother shave (compared to the disposable Gillette Blue3). They are sharper (the first 2 blades), providing a closer shave without irritation. The long-lasting Comfort gel strip allows for an incredible glide. This Mach3 Turbo razor refill can be used with any Mach3 razor, compared to Gillette Blue II. Approximate shelf life of 8 months per pack.