A system for applying plastic clips to tubular products, comprising: a die and a punch, and a plurality of connected clips or a stick of clips, said die comprising a peripheral face, an arcuate wall in said die peripheral face forming a half-cylindrical bore, said bore separating said die peripheral face into a first side and a second side, and a die groove formed in said arcuate wall and said second side, said die groove extending from said first side, through said arcuate wall and said second side, and forming a slot in an outer edge of said die, said punch comprising a peripheral face, an arcuate wall in said punch peripheral face forming a half-cylindrical bore, said bore separating said punch peripheral face into a first side and a second side, and a pair of grooves (70, 72), said grooves (70, 72) extending from said first side to said second side of said punch peripheral face; and means for moving at least one of said die and said punch from a first position in which said die peripheral face and said punch peripheral face are adjacent, to a second position in which said die peripheral face and said punch peripheral face are remote, wherein, in the plurality of connected clips, each said clip of said plurality of clips comprises a semicircular first section, two bending sections extending from said first section, and a connecting section extending from each said bending section, and wherein in the stick of clips, each said clip comprises a top section having an internal face and an external face, and two legs (150, 152) extending from opposite ends of said top section, said top section and said legs (150, 152) defining a space. a die and a punch, and a plurality of connected clips or a stick of clips, said die comprising a peripheral face, an arcuate wall in said die peripheral face forming a half-cylindrical bore, said bore separating said die peripheral face into a first side and a second side, and a die groove formed in said arcuate wall and said second side, said die groove extending from said first side, through said arcuate wall and said second side, and forming a slot in an outer edge of said die, said punch comprising a peripheral face, an arcuate wall in said punch peripheral face forming a half-cylindrical bore, said bore separating said punch peripheral face into a first side and a second side, and a pair of grooves (70, 72), said grooves (70, 72) extending from said first side to said second side of said punch peripheral face; and means for moving at least one of said die and said punch from a first position in which said die peripheral face and said punch peripheral face are adjacent, to a second position in which said die peripheral face and said punch peripheral face are remote, wherein, in the plurality of connected clips, each said clip of said plurality of clips comprises a semicircular first section, two bending sections extending from said first section, and a connecting section extending from each said bending section, and wherein in the stick of clips, each said clip comprises a top section having an internal face and an external face, and two legs (150, 152) extending from opposite ends of said top section, said top section and said legs (150, 152) defining a space.