The Homebrew Stuff Sanitary Hose Barb Pipe Fitting to Tri Clamp Clover Sanitary hose connections just like the professional breweries use. 2" (actual) diameter disc on two fittings are clamped together with a high temp silicone gasket in between, providing a clean efficient connection for valves, hoses, etc. Fittings are all 304 Stainless steel. 1/2" Hose Barb x 1 1/2" Sanitary Clamp Please check our other Homebrew Stuff listings for more accessory parts.