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 0.020 in Minimum Thickness - Inch 0.0015 in Non-Marring No Number of Feeler Blades 12 Thickness Range 0.001 in to 0.02 in Blade Width 1/2 in Color Silver Holder Material Steel