Pico 6118D Vinyl Wire Grommets ID 5/16" x OD 7/16" 10 per Package 5/16" Inside Grommet Diameter (OD of Wire or Wires to Pass Through) 1/16" Groove Width (Thickness of Wall Grommet Will Be Installed In) 7/16" Min Hole Size ( ID of Predrilled Hole for Grommet) Gaurds Against Cut or Frayed Wires 10 per Package