Drilled No. 10 Stopper

This #10 Rubber stopper bung is drilled with 3/8" center hole to accommodate standard size air locks.

For use with plastic carboys (3, 5 & 6 Gallon).

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Specifications:

• Made out of Rubber
• 1 15/16" (49.3mm) Top Diameter
• 1 5/8" (41.4mm) Bottom Diameter
• Gum Laboratory Drilled Stopper