Pico 6127PT Vinyl Wire Grommets ID 1" x OD 1-3/8" 3 per Package 1" Inside Grommet Diameter (OD of Wire or Wires to Pass Through) 1/8" Groove Width (Thickness of Wall Grommet Will Be Installed In) 1-3/8" Min Hole Size ( ID of Predrilled Hole for Grommet) Gaurds Against Cut or Frayed Wires 3 per Package