Feeler Gauge Set, Blade Length 3 in, Blade Material Steel with Brass, Blade Style Short Blade, Dimension Type Inch, Included Certification None, Maximum Thickness - Inch 0.035 in, Maximum Thickness - mm 0.889 mm, Minimum Thickness - Inch 0.002 in, Minimum Thickness - mm 0.051 mm, Non-Marring No, Number of Feeler Blades 36, Thickness Range 0.002 in to 0.035 in, Tolerance -0.003 mm + 0.005 mm, Blade Width 1/2 in, Color Silver, Gray, Gold, Hardness HRC45, Holder Material Stainless Steel WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -