Feeler Gauge Set with Wire Taper Gauges Finish Unfinished Blade Length 4 1/2 in Blade Material Steel Blade Style Tapered 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 9 Thickness Range 0.002 in to 0.015 in Tolerance +/-0.00025 in Blade Width 1/4 in to 1/2 in Color Silver