3/16" x 7/16" x 5/16 x 1/16" Black Rubber Grommets (24 pcs.)

Diameter: 3/16"
Diameter 2: 7/16"
Thickness: 3/16"
Material: Rubber
Finish: Black
Type: Grommet
Groove: 1/16"
GrooveDiameter: 5/16"
Groove: 1/32"
Groove: x 1/32"

Box of 24.

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.