Rubber Hole Plug for 3/4" Opening 3Pcs in Each Package 3/4" Diameter Rubber Grommet Without a Hole Hard To Find Item Has 1/16" groove around outer circumference For Installation in 1/16" Thick Panel Can be used to seal hole in panel or create your own hole in center for custom application Quantity 3 - Each item purchased consists of a pack of 3 For Panel Hole Diameter 3/4" Outer Diameter 1" Overall Thickness 1/4" For Panel Thickness 1/16" Durometer hardness - 55A. Can be used indoors or outdoors. Color is black. Temperature range –56° to +200° F