This is a stainless-steel tri-clamp sample valve with a rotating rack arm mounted on a 3/8" tap with 13 mm barb. It is easy to mount.This valve can also be used for bottling directly from your Fermenter.This tri-clamp sample valve with racking arm will fit many fermenters e.g., Conicus, Ss Brewtech, Brewtools, Brew Monk etc.AISI 304 stainless-steel.Mounted valve for easy opening and closing.Easy to clean.Easy to mount.Tri-clamp standard.