Draft Shank Tailpiece Stainless Steel 304 Build out your kegetartor with these high-quality tail pieces, essential for connecting your draft lines to beer shanks. Essentail for connecting draft line tubing to a beer shank when you're building a kegerator. Use with 5mm/6mm/8mm ID draft tubing. These tail pieces fit inside of a shank hex nut and is sealed to a shank or keg coupler with a rubber washer.