Kegland Ball Lock Keg | Corny Keg | 5 gal. itemID-36111 5 gal kegs have a

5 gal kegs have a lid with an internal tab/hook under the lid designed specifically for attaching dry hopping bags

As the book says

1/2" full port stainless ball valve

or Juicy IPA

Kegland Ball Lock Keg | Corny Keg | 5 gal. itemID-36111 5 gal kegs have aThese premium brand new Kegland ball lock kegs are rated to 130psi working pressure and are made using a robotic orbital welding machine. The finish on these kegs are far superior to our other economy stainless steel kegs and are made with super smooth welds making them sanitary and easier to clean. The black rubber on these kegs also make them a little nicer to use around your house as they are less likely to damage your tile floors or crack plastic