This hose barb fitting has a full 1/2" bore. The OD of the barb is .625" and typical silicone or vinyl tubing will press right over it. Every other 1/2" barb fitting I was able to find only had a .375 to .400 ID resulting at a restriction at your hose connection (including our standard 1/2" hose barb). This is especially helpful on the inlet side of a March pump to help reduce pump cavitation. Frustrated with the other options on the market, I had these barbs made just for the home brewing market.

Side by side comparison between a standard 1/2" hose barb fitting on the left and our 1/2" Full Bore High Flow fitting on the right.

Looking down the bores of each fitting, you can see how much larger the ID of the Full Bore fitting is.

Made from 304 stainless steel and polished. Unlike the other high flow barbs that have recently emerged on the market, these are a billet machined piece and not cast, hence the higher price.