This helium tank - 50 balloons is indispensable at a party where a large number of balloons need to be blown up. No hassle with inflation, you simply connect the balloons to this tank and they are filled in no time. This tank is smaller and handier but with the same capacity, making it very easy to use. The indication of the number of balloons that can be filled is based on standard 9'' inch balloons. This number may differ for different shapes and sizes.