Number Set, 1/4 In. H, Steel, 50 to 59Mfr # 50 59 Item Number Set Material Steel Includes (10) 50 to 59 Case Material Wood Impression Letter Type Gothic Hardness 50 On A Rockwell C Scale Standards Not Applicable Shank Thickness 9 16 in Impression Character Style Round Face Duty Heavy For Max Surface Hardness Rockwell C50 Product Type Character Sets For Maximum Surface Hardness 50 on A Rockwell C Scale Stamp Material Steel Characters Included 50 thru 59 Character Type Set Double Digit