Carboy Bung (#10.5) Drilled

Grow Masters Gurnee

$2.95 

Rubber stoppers with a hole drilled in the center perfectly sized to accept airlocks.
#10.5 Drilled Rubber Stopper Bung
Pure white gum laboratory stopper drilled with 3/8"center hole to accommodate standard airlocks.

Top Diameter 2-1/16"
Bottom Diameter 1-3/4"

Be sure to measure your carboy if unsure of size.
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