Contains total of 22 blades. • 10 blades 3" x 1/2" in the following thicknesses: .002, .003, .004, .005, .006, .007, .008, .010, .013, .015. 12 blades 1-3/4" x 1/4" in the following thicknesses: .011, .012, .013, .014, .015, .016, .017, .018, .019, .020, .022, .025. Overall length 5". Both decimal and equivalent metric size etched in each blade. Gauges supplied in holder with knurled lock-nut which allows the user to select the required. blade size and lock it into position. - Ring located in the handle provide a secure attachment point.