The Beertender puller works with serving tubes that connect the drums to the machine. The Beertender serving tube will keep your beer taste fresh. We recommend using a different beer tube with each new keg. Instructions for use: when installing a keg, simply insert the tube into the tap, close the cap and then the lid before serving yourself a glass of beer. Only compatible with Heineken, Pelforth, Affligem, Affligem Cuvée Carmin, Desperados and Edelweiss beers and Beertender beer machines.