2" Tri-Clover - Hop Bong - Sight Glass with Black Bottle CapFrom Kegland: Named purely on its looks and not its function. The Hop Bong is a versatile pressurizable tri clover accessory, capable of not only dry hopping oxygen purged hops into fermenters. But also as an inline carbonation oxygenation accessory. This particular sized tri clover Hop Bong was designed for the FermZilla Tri Conical and All Rounder Fermenters with the new Tri Clover Adapted Pressure Lid. It can also be adapted to any 2" Tri Clover