Stanley Proto J000N 22 Blade Step Cut Feeler Gauge Set,Stanley Proto,J000N" /> -inch Go/no-go-inch 1/2-inch x 3-5/16-inch blades in steel holder Each blade has two different thicknesses Sizes: .004/.006-inch, .005/.007-inch, .006/.008-inch, thru .020/.022-inch, .023/.025-inch, .024/.026-inch, .025/.027-inch Blades etched with both decimal size and metric equivalent