The conical comes standard with a stopper and airlock. However, many brewers (including many here at MoreBeer!) wish to run a blow off tube into a bucket of water. This kit replaces the stopper and airlock with 6 feet of 1 inch tubing.,,Connect the included 1.5" tri-clamp barb to the top of your domed lid with the included clamp and gasket. Run the tubing to a bucket with StarSan. If the length of tubing is longer than you need, just trim to the desired length (garden clippers work best.),,Includes,6 ft of 1 in ID tubing,1.5" Stainless tri-clamp to 1" barb adaptor,1.5" tri-clamp,1.5" tri-clamp gasket