Personna, already renown as a top blade manufacturer, presents the Twin Pivot Plus. The Personna Twin Pivot Plus cartridge blades possess the convenience, comfort, and close shave you desire. These cartridge blades go through a state-of-the-art grinding and honing process, and the cartridge itself has a lubricating strip attached as well which allows for that silky, smooth shave. All 10 cartridges in each pack are easily changed out, and they fit TracII and Atra Razors. Superb value and quality.