Loose-Leaf Feeler Gauge Set, Finish Unfinished, Blade Length 12 in, Blade Material Steel, Blade Style Long Blade, Dimension Type Inch, Included Certification None, Maximum Thickness - Inch 0.030 in, Minimum Thickness - Inch 0.001 in, Non-Marring No, Number of Feeler Blades 32, Thickness Range 001 in - 0.030 in, Tolerance +/-0.00025 in, Blade Width 0.05 in, Color Silver, Included Blades .0005-.030 in, Locking Device No, Markings Inch, Non-Magnetic No