This is a standard Pin Valve CO2 bottle. This is the bottle we use on our pin valve kits. This bottle can also be used for paintball guns. We also make a regulator that works with this bottle. These bottles are less expensive than a standard CO2 bottle, there are more places to fill and it is much less expensive to fill (3 to 4 bucks in most areas) These bottles are new with a recent test date and use a very high quality pin valve.  This tank will dispense several 5 gallon kegs or between one and two full size kegs