Blow-Off Tubing - 1 Inch ID X 1.25 OD (Sold by Foot)
BLOW-OFF TUBING - 1 INCH ID X 1.25 OD (Sold by Foot). Makes a good seal INSIDE the neck of carboys. Allows foam to blow off rather than clogging an airlock. Usually you want your blow-off hose to be about 3 feet long so that the other end can go into a bucket of water. Sold by the foot.