Number Set, Character Height 1/4 in, Character Type Set Double Digit Number Set, Characters Included 50 to 59, Duty Heavy, For Maximum Surface Hardness 50 on A Rockwell C Scale, For Shank Diameter 9/16 in, Holder Length Not Applicable, Holder Shank Size Not Applicable, Impression Character Style Round Face, Includes (10) 50 to 59, Product Type Hand Stamp Kit, Shank Length 3 in, Shank Thickness 9/16 in, Shank Width 9/16 in, Stamp Material Steel, Standards Not Applicable, Case Material Wood