Hand Stamp Set, 3/16 In, Combo Use to permanently mark tools, components, ... locks, and various metals. Packed in an ABS plastic Hand Stamp Set, 3 ... /16 In, ComboItem # 1F112Item Hand StampType 3/16" Letter and Number SetShank ... Length (In.) 2-11/16Shank Size Square 3/8"Material of Construction Alloy SteelHardness Rockwell C ...