Long-Blade 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 0.015 in Minimum Thickness - Inch 0.002 in Non-Marring No Number of Feeler Blades 8 Thickness Range 0.002 in to 0.015 in Tolerance +/-0.00025 in