●【Size】 : 2" / 50mm ID, 2-3/8" / 60mm Drill Hole, 2-3/4" / 70mm Outside Diameter, 5/32" / 4mm Groove Width, 1-27/32" / 47mm Total Thickness ●【Material】 : Flexible Synthetic Rubber,Non-toxic and Tasteless,Strong Insulation Protection Function,Dust-proof and Flame-retardant ●【Features】 : Keep wires or any other materials from rubbing against metal,Run wires through frame, firewall, sheet metal and other applications. ●【Installation】: Easily cut the diameter of the rubber plug,then snap directly into the drill hole. ●【Package Includes】 : 4 Pcs x Rubber Grommet