Rock U 50 shot by Brothers Pyrotechnics

Rock U is a 50 shot aerial barrage by Brothers Pyrotechnics but, unlike most fireworks of this type, each shot bursts at two levels. With Rock U you get a mine lift with each shot: this is a cluster of stars that burst from the firework's tubes and in this case burst with a crackle effect; then you get a higher level burst above the mine lift effect. The overall effect is a double burst from each shot.