Ontario Knife Co. warrants this product to be free of defects in materials and workmanship for as long as it is owned by the original owner. Ontario Knife Co. will repair or replace any such defective product when it is returned by the original owner. If you wish to return a knife under warranty, we need to first issue you a Return Authorization number. We cannot accept a return without an RA number. Any returns submitted without an RA number will be returned to the sender. To get an RA number, complete the following form.