WWGSK11-2-A Step Key Stock, Base Height 0.25 in, Material Steel, Material Grade/Class Grade 1018, Finish Zinc Plated, Length 12 in, Length Tolerance +0.000/-0.125 in, Overall Width 0.5 in, Overall Width Tolerance +0.000/-0.003 in, Step Height 0.188 in, Step Height Tolerance +/-0.005 in, Step Width 0.375 in, Step Width Tolerance +0.000/-0.003 in, Straightness Tolerance Not Applicable, Standards RoHS Compliant, Pack Size Small Pack, System of Measurement Inch, Key Shape Step, Rockwell Hardness B85