【ALLOW YOU TO CUSTOMIZE LENGTH】Pckage includes: 1 * Faucet connection fitting with 2 rubber o-rings, 1 * 12 inch hose. Long enough length can be cut to the length you need to reduce foams and co2 loss..【LESS BEER FOAM PRODUCED】Allows filling both bottles and growlers from your keg without causing too much foam or co2 to escape, a perfect combination miracle of simplicity and functionality..【LESS COST】 This growler filler costs less than a counter pressure bottle filler and makes bottling procedure easier. Connect it by simply inserting into the tap, and is held in place by both pressure and the rubber grommets..【NO LEAKS】Stainless steel fitting and durable rubber O-rings make an excellent seal, food grade gel hose can be used for long time, easy to clean..【TYPICAL BEER TAP GADGET】Fits beer taps whose beer outlet inside diameter is 12.63-12.7mm and is typical on most bar and home setups and perfect for anyone who home brews with keg bottles. Suggest install the grolwer filler into beer faucet by slowly twisting for well fit. NOT fit Perlick faucets!