Maximum calibre tubes mean 1405gms of pyro powder packed into just 60 tubes. Just watch as this stunner fires 10 banks of 6 over 40 seconds, starting with 6 low noise gold spinners bursting with red horsetails, then the Z firing starts with reds, greens and pinks followed by gold trails bursting with a multitude of pastel colours then a mad finale of a bank of 12 all fired at once. Whats not to love?