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