Stamp letters & numbers into steel and other metals, wood, leather, vinyl or plastic * Complete set of 26 upper-case letters, ampersand (&) and numbers 0 - 9; professional quality * Large characters are easy-to-read, 1/4" height (6mm); wood case, set weight 3.5 lbs * High-durability hardened and tempered carbon steel 2-1/2" length with 3/8" square shank * Permanently identify equipment, tools & valuables; customize woodworking projects, imprint initials