From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Full Power Bojack says, "This will finish you off!" as he puts his hands together in front and charges two green energy spheres. He then spreads his arms out at his sides and throws them down to fire the energy spheres in the form of a large energy wave at his opponent, inflicting a huge amount of damage.
Bojack used this attack in an attempt to kill Super Saiyan 2 Gohan, who counter-attacked with the Super Kamehameha, in Dragon Ball Z: Bojack Unbound. The two energy waves clashed in a huge explosion and both of the fighters rushed through to attack. In the blinding light, Gohan ultimately killed Bojack with one final punch and won the fight.
It also appeared in Dragon Ball Z: Sūpā Butōden 2.
It later appeared in Dragon Ball Heroes.