<B>#7-1/2 Rubber Stopper Airlock Hole Review</b><P>http://tinyurl.com/kdmuzdz <P><P> #7-1/2 Rubber Stopper Airlock Hole <P>Made of rubber.<P>Creates an airtight seal in the mouth of your carboy or fermenter.<P>Essential piece of homebrew supplies.<P>1 1/4" Bottom Diameter.<P>1 1/2" Top Diameter.<P>
