Reversed Number Set, 1/16in H, ReversedMfr # 01094 Item Number Set Material Steel Includes (9) 0 to 8 (With 6 Serving as 9) Case Material Wood Impression Letter Type Reversed Hardness 50 On A Rockwell C Scale Standards Not Applicable Duty Moderate Impression Character Style Reversed Shank Thickness 1 4 in Stamp Material Steel Character Type Set Number Set For Maximum Surface Hardness 50 on A Rockwell C Scale For Max Surface Hardness Rockwell C50 Product Type Character Sets US DOE RDT F7 3T