Number Set Character Height 3/16 in Character Type Set Double Digit Number Set Characters Included 40 to 49 Duty Heavy For Maximum Surface Hardness 50 on A Rockwell C Scale For Shank Diameter 1/2 in Holder Length Not Applicable Holder Shank Size Not Applicable Impression Character Style Gothic Includes (10) 40 to 49 Product Type Hand Stamp Kit Shank Length 3 in Shank Thickness 1/2 in Shank Width 1/2 in Stamp Material Steel Standards Not Applicable