4 Pieces- Twin "S" Bubble & 3 Piece Econo-Lock Cylinder Airlock w/ #6.5 Stopper and Universal Bung</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>3 Piece Econo-Lock</li><li>Twin Bubble Airlock</li><li>6.5 Stopper</li><li>Universal Bung</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31-GSrtGUqL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31no3OXeTVL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/21jqnZCruNL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31EO3ZUM%2B7L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/311CZpGUZFL.jpg' noproxy></br>