Stamp 3/16" (4mm) letters & numbers into steel and other metals, wood, leather, vinyl or plastic * Complete set 26 upper-case letters, ampersand (&), dot and numbers 0 - 9; professional quality * 7" brass handle automatic punch with adjustable tension - no hammer needed; magnetic punch holder * High-durability hardened & tempered carbon steel punches with 1/4" square shank; storage case * Permanently identify equipment, tools & valuables; customize woodworking projects. imprint initials