Feeler Gauge Set Finish Unfinished Blade Length 3 in Blade Material Steel Blade Style Short Blade Dimension Type Inch Included Certification None Maximum Thickness - Inch 0.016 in Minimum Thickness - Inch 0.006 in Non-Marring No Number of Feeler Blades 6 Thickness Range 0.006 in to 0.016 in Application For Checking the Air Gap in Electronic Ignition Systems for All Weather Conditions Blade Width 1/4 in Color Silver Holder Material Steel