Number Set, Character Height 1/8 In., Shank Length 2-1/2 In., Shank Size Square 5/16 In., Material Steel, Hardness 58 to 62HRC at the Engraving End and 38 to 46HRC at the Striking End, Case Material Plastic, Includes (9) Pieces - 0 thru 8 with 6 Serving as 9, Standards Federal Specification GGG-D-280C. This item has been restricted from sale in the following state (s): []