# 10 rubber stopper Airlock hole ›See more product details
Made of rubber., Creates an air-tight seal in mouth of carboy or fermenter., Essential piece of homebrew equipment., 1 5/8 bottom diameter., 1 15/16 top diameter.
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TrustScore 4.5 | 7,300+ reviews
Ali H.
Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.
1 day ago
Fatima A.
Best international shipping I've ever tried. Worth every penny!
