The Punch Machine™ is based on HPC's "Standard of the Industry" Original Blitz™ code machine making it the most versatile punch machine on the market! Its innovative design is so revolutionary that it was awarded a U.S. Patent. It is completely portable and punches accurate keys by code quickly and effortlessly. It is extremely easy to change from one manufacturer to another because depth and space adjustments are not required. The Punch Machine™ has a 1-YEAR WARRANTY.