Pico 6125pt Vinyl Grommet Id 1/2xod 13/16 1/2" Inside Grommet Diameter (OD of Wire or Wires to Pass Through) 1/4" Groove Width (Thickness of Wall Grommet Will Be Installed In) 13/16" Min Hole Size ( ID of Predrilled Hole for Grommet) Gaurds Against Cut or Frayed Wires 6 per Package