This is a two-part adaptor made up of a stainless 3/4" threaded inducer tube and a 3/4" to 2" bushing. Thread the adaptor into a 2" ball valve. Make sure the ball valve is open all the way. Now you can push the BBQ Guru fan into the stainless 1 -3/8" inducer and you are ready to cook. Comes with a high-temp silicone kill plug.