- Twenty-five - 12" x 1/2" blades with thicknesses: .0015, .002, .003, .004, .005, .006, .007, .008, .009, .010, .011, .012, .013, .014, .015, .016, .017, .018, .019, .020, .021, .025, .027, .030, .040
- Comes with knurled lock-nut, which releases the blades instantly for rapid selection of size desired and when tightened locks the individual blade into the working position, retaining the blades not in use firmly in the handle
- Both decimal and metric equivalent, are permanently etched on each blade
