Who knows the 3 and 5 blade Gillette, this pack comes with 3 blades heads compatible with Mach 3 razors My mach 3 turbo came out and I replaced its old model of these new blades ^ 3 mach updated. I have no differences because I used the previous model just as good. Gillette Mach 3 with Pro glide and 5-blade is clearly above the others in terms of efficiency and quality. No chance to cut and redness are rare, you really insist with several passages. They are super efficient but a little more expensive than the competition. Only compare Mach 3 Turbo razor and competition, and choice, if you can afford to put a little more expensive, is much better.