Black Oxide-Coated Pin Gauge Library, Material Tool Steel, Finish Black Oxide, Diameter Increment 0.001 in, Diameter Range 0.0110 in to 1.000 in, Gauge Type Go (Plus), Number of Gauges 990, Overall Length 2 in, Surface Finish Uncoated, Tolerance +/-0.00020 in, Tolerance Class ZZ, Hardness RC 60/65, Included Certification Certificate of Accuracy, Includes Handle No, Long Form Calibration Certificate No, Number of Drawers 8, Standards ISO 17025:2005, Dimension Type Inch