Size 6.5 Drilled Rubber Stopper 1 3/8 x 1 1/8

Pure gum stoppers with inch hole to accept airlock. Best Fit 6 Gallon Carboy.

Pure gum stoppers with inch hole to accept airlock. High quality soft gum rubber for a solid seal. Sizes are listed in inches. Sizes 2, 6.5, 7, 7.5 and 10 always in stock. Other sizes may be delayed 2 weeks. No. 10 fits the Better Bottle opening.