Steel Stamps Set, 2-5/8" Shank L, Steel, 6361Mfr # 06361 Item Steel Stamps Set Material Steel Includes (36) A to Z, 0 to 8 (With 6 Serving as 9), Ampersand (&) Case Material Wood Impression Letter Type Gothic Indication Single Groove On Thumb Side of Stamp for Easier Orientation Hardness Up to 50 On Rockwell C Scale Standards Not Applicable Characters Included A thru Z, 0 thru 9 (6 doubles as 9), Ampersand (&) For Maximum Surface Hardness Up to 50 on Rockwell C Scale US DOE RDT F7 3T