Airlocks, bungs and corks to fit wine making fermenters
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Tail Cork No4 - 1 5/8" x 1 7/8"
£1.25

A plain unbored conglomerate tail cork 1 5/8" diameter at the smaller end, 1 7/8" at the larger and 1 1/4" thick.
This fits the neck opening of the 22.7 litre Better Bottles.