Tramontina Utility Knife Special Serrated Edge Never Needs Sharpening. Stain Free High Carbon Steel Full Tang, Polypropylene Handle, Dishwasher Safe. 25 Year Manufacturer's Warranty. Micro-Serrated Edge on the high-carbon stainless steel blade & Polypropylene Handle; Blade and Handle are Permanently Bonded with no Rivets, Gaps, or Seams.