Product Details: Manufacturer Part Number: 52-438-777|Minimum Diameter (mm)|1.00; 1.0mmMinimum Diameter (Inch)|0.125inMaximum Diameter (mm)|25.0mm; 25.00Maximum Diameter (Inch)|1inAccuracy Grade|24Material|Chrome Steel; Chrome SteelSizes Included (Metric)|Sizes Included (Fractional Inch)|Tolerance|Standards|AFBMA CertifiedSizes Included (mm)|1.00; 10.00; 11.00; 12.00; 13.00; 14.00; 15.00; 16.00; 17.00; 18.00; 19.00; 2.00; 20.00; 21.00; 22.00; 23.00; 24.00; 25.00; 3.00; 4.00; 5.00; 6.00; 7.00; 8.00; 9.00Tolerance (mm)|0.0025Hardness|63 RcCertification Included|YesNumber of Pieces|50; 50Number of Pairs|25PSC Code|UNSPSC Code|