Feeler Gauge Set Finish Unfinished Blade Length 4 1/2 in Blade Material Steel Blade Style Short Blade Dimension Type Inch Included Certification None Maximum Thickness - Inch 0.2 in Minimum Thickness - Inch 0.0015 in Non-Marring No Number of Feeler Blades 13 Thickness Range 0.0015 in to 0.2 in Tolerance +/-0.00025 in