Pin Gauge Set,ZZ,Plus,5.01mm-9.99mm,250 pcs., Material Steel, Diameter Increment 0.02 mm, Diameter Range 5.01 mm to 9.99 mm, Gauge Type Go (Plus), Overall Length 2 in, Tolerance +/-0.005 mm, Hardness RC 60-65, Included Certification Certificate of Accuracy, Standards NIST, Dimension Type Metric