One barb segment, according to Glover " Alternate barbs cut" Patent date May 4, 1875, patent # 162835, Martin M. Mack, Belvidere, Ill, Type of barb: round wire, Points on barb: 2 , gage of barb and wire: small gage wire, Coating: none, Type of stand, single wire strands and wire sections. Twist: Counter- clockwise.