Harris Filters 5 x Bubbler Airlocks with Red Dust Caps for Homebrew

5 Bubber airlocks, complete with red dust caps. Will fit into plastic demijohns or fermenters with grommets. Will also fir into glass demijohns or 5 gallon wine fermenters but you may need a bung to insert the airlocks into. To fill with water, take the red top off and hold the airlock upright under a running cold water tap for approx. 4 seconds. Remove from the flow of water and any excess water will be ejected from the bottom of the airlock. Place on the red dust cap to stop dust and dirt entering the airlock.