Number Set Character Height 1/8 in Character Type Set Number Set Characters Included 0 to 8 (With 6 Serving as 9) Duty Heavy For Maximum Surface Hardness 50 on A Rockwell C Scale For Shank Diameter 5/16 in Holder Length Not Applicable Holder Shank Size Not Applicable Impression Character Style Gothic Includes (9) 0 to 8 (With 6 Serving as 9) Product Type Hand Stamp Kit Shank Length 2 1/2 in Shank Thickness 5/16 in Shank Width 5/16 in Stamp Material Steel Standards Not Applicable