3/16" x 7/16" x 0.6" Black Rubber Grommets GRMTR-052 (10 pcs.)

Diameter: 3/16"
Diameter 2: 7/16"
Thickness: 0.6"
Material: Rubber
Finish: Black
Type: Grommet
Groove: 3/32"

Box of 10.

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.