Everbilt 11/16" Black Stopper 1PC (26M)

These rubber stoppers have a tapered shape to fit various sized openings and provide a secure, watertight seal. The solid, synthetic rubber construction can be cut to an exact length and is very elastic. Commonly used as a bottle stopper for glass containers, in electrical boxes and various household or shop applications. The tapered shape allows 1 size stopper to fit variously sized openings.