Number Set Character Height 1/16 in Character Type Set Number Set Characters Included 0 to 8 (With 6 Serving as 9) Duty Moderate For Maximum Surface Hardness 50 on A Rockwell C Scale For Shank Diameter (9) 1/16 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 3/8 in Shank Thickness 1/4 in Shank Width 1/4 in Stamp Material Steel