5/16" x 1/2" x 13/16" #000 Black Rubber Stoppers (40 pcs.)

Diameter: 5/16"
Diameter 2: 1/2"
Length: 13/16"
Material: Black Rubber
Nominal Size: #000
Type: Stopper

Box of 40.

A stopper or plug is used to temporarily seal a bottle opening.