SuperKnife Replacement Utility Blade, 10 Pack. Superknife Replacement Blades. Utility Knife Replacement Blades. Package of ten (10) blades. Will fit Super Knife Utility Knives, Gerber Utility Knives and most other contractor style utility knives. Please note that these are not the original Super Knife blades which are no longer available, these blades fit the superknife perfectly but they are slightly thinner. Individual blades are bulk packed.