Steel Stamps Set, 3" Shank L, Steel, 7093Mfr # 07093 Item Steel Stamps Set Material Steel Includes (9) 0 to 8 (With 6 Serving as 9) Case Material Wood Impression Letter Type Gothic Indication Three Grooves On Thumb Side of Stamp for Easier Gripping and Orientation, Character and Size Marked On Side of Stamp Hardness Up to 50 On Rockwell C Scale Standards Not Applicable Duty Heavy For Max Surface Hardness Rockwell C50 Character Type Set Number Set Characters Included 0 thru 9 (6 doubles as 9)