Intertap Beer Faucet Shank (Stainless)- Tower Shank w/Duotight Compatible BarbThis shank's small design makes it perfect for attaching a faucet to a tower, and comes with a Duotight ready tailpiece. Quickly connect 8mm OD draft line to the shank by pairing it with a Duotight pushin fitting 6.5mm (1/4")x 8mm(5/16") reducer