These PEX Crimpers are based off of the 24" Bolt Cutters, similiar to what you would get at Harbor Freight, AllTrade Tools or MiT(Michigan Industrial Tools). All of these Crimpers ship with the original Bolt Cutting Jaws, and the user can convert back and forth between the Bolt Cutting Heads and the PEX Crimper Heads as necessary. Making this dual purpose tool a necessity in any DIY'er or Plumber's Tool kit.