1/2" x 1-1/32" x 7/8" Black Rubber Grommets GRMTR-106 (10 pcs.)

Diameter: 1/2"
Diameter 2: 1-1/32"
Thickness: 7/8"
Material: Rubber
Finish: Black
Style: Knock-Out Bushing
Type: Grommet
GrooveDiameter: 7/8"

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.