Number Set Character Height 3/16 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 3/8 in Holder Length Not Applicable Holder Shank Size Not Applicable Impression Character Style Reversed Includes (9) 0 to 8 (With 6 Serving as 9) Product Type Hand Stamp Kit Shank Length 2 3/4 in Shank Thickness 3/8 in Shank Width 3/8 in Stamp Material Steel Standards Not Applicable