Hop Dropper - 1.5" Tri-ClampThe main advantage of the dry hopper kit is the ability to add hops to a closed, pressurized fermenter without exposing the beer to oxygen. Includes: 1. 5 Sight Glass 1. 5 Ball Valve 1. 5 Pressure Relief Valve Adapter 1. 5 Cap With Gas Post All Necessary Gaskets and Tri Clamps Benefits: Purge Hops With CO2 for No Oxygen Dry Hopping Dry Hop Under Pressure