From the product description, check product page for current description, price and availability:

The KegLand Stainless Steel Mini Beer Kegs are specifically designed for home brewing/growler dispensing. They are suited to small batches and suited to people who want to fit them into their home refrigerators. You can naturally carbonate using priming sugars or force carbonate and serve your beer with the optional ball lock lid (item P07, see at right). They come with a silicone gasket sealed stainless threaded lid, so you can fill them with beer and let them naturally carbonate, or carbonate as needed with the optional P07 ball lock lid. You will be given a chance to buy this lid (you do not need a Ball Lock Lid for every keg) when you put this in your cart.

These fit into a standard domestic refrigerator. The optional Ball Lock lid for these kegs use a flexible silicone dip tube the kegs can also be dispensed on their side or upright. The flexible silicone dip tube of lid P07 is heavier than beer, and will sink to the bottom even if the kegs are on their side. Kegs are equipped with a 30 PSI relief valve, and have a maximum pressure of 45 PSI.

Kegland Mini Kegs use the gold standard acid bath electrolosis to pacify the 304 grade stainless steel making the more resistant to rust than any other mini keg on the market. These are the only mini keg that uses a special robotic technique to weld the kegs from the inside out. This means KegLand gets a superior welding finish that is more sanitary than any other mini keg available. Although there are many other mini kegs that come from China simply none have the quality and finish as the genuine KegLand minikegs.

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