3/8" x 15/16" x 1/2" Black Rubber Grommets

Diameter: 3/8"
Diameter 2: 15/16"
Thickness: 1/2"
Material: Rubber
Finish: Black
Type: Grommet
Groove: 5/32"

Box of 6.

Grommets and eyelets are metal, plastic, or rubber rings that are inserted into a hole made through another material. They may be used to reinforce the hole, to shield something from the sharp edges of the hole, or both.