Wyeast | 1275 Thames Valley Ale | Beer Yeast | Activator Smack-Pack System™ | 100 Billion Cells itemID-16126 This will allow you to

This will allow you to open up the valve to get to the ball and two gaskets that form the seal when closed

The design has certainly been copied but not with consistent quality

1/4'' - Bore

Designed to be used with standard hose pressure

If you want to use it as a fermenter you will also need to pick up the optional lid

Wyeast | 1275 Thames Valley Ale | Beer Yeast | Activator Smack-Pack System™ | 100 Billion Cells itemID-16126 This will allow you to1275 produces classic British bitters with a rich, complex flavor profile Light malt character, low fruitiness, low esters, clean and well balanced Activator Smack Pack System "proofs" the yeast and shortens lag time when it hits your wort When smacked, the Activator packet releases sugars and nutrients to initiate the culture's metabolism Wyeast has been a pioneer in craft brewing for over 35 years and is committed to creating the finest fermentation