This part is a Manifold that features (6) 3/8" Barbs and is Flow Thru, 1-1/2"slip x 1-1/2"spigot..
To plug the barbs you can use these plugs:
Barb Plug 3/8" Slip for Air Manifold
This part is a 1 1/2" Street X 1 1/2" Slip X (4) 3/4" Smooth Barbs manifold and a single barb plug in case you only need 3 barbs instead of 4.
The Manifold receives a 1...