Stanley J000SL Proto 12 Blade Long Feeler Gauge Set 1/2-inch x 12-inch blades in steel holder. Sizes: .0015-inch, .002-inch, .003-inch, .004-inch, .005-inch, .006-inch, .008-inch, .010-inch, .012-inch, .014-inch, .015-inch, .020-inch. Blades etched with both decimal size and metric equivalent. 0.30-lbs Weight.