Crystal "Super +" razor blades have been a staple at Barbershops for many years. Also, known as "Israeli Personnas" as they are manufactured by Personna in Israel, these blades are extremely sharp and smooth. We find these to be outstanding blades in Double Edge Safety Razors and in barbershop style straight razors that require a blade be cut in half. Offering is for 12 packs of 10 blades each.