PRICES MAY VARY. Engineered with precision cut steel for up to 15 shaves per blade 3 blades for a classic smooth shave Stronger-than-steel blades stay sharper for longer (vs. Sensor3) Up to 8 months of shaves per pack All Mach3 blade refills fit all Mach3 handles Each of these refill cartridges feature a unique optimal shave indicator strip which fades to white as the razor performance is diminished. These cartridges come in a pack of three eight-count boxes.Number in pack: 8Number of packs:3 24