In their action, Akatsuki used one sealed jutsu to extracted bijuu in the body of one of his members. With that sealed jutsu, Akatsuki could reveal a statue to pull out bijuu from the Jinchuuriki's body. The statue had the shape of humankind that opened his hands up and tied. The statue eyes were closed by cloth and his mouth too. This statue apparently symbolised lack of freedom. When carrying out the transfer, the member who will be filled up by Bijuu must be in the middle. The other members will stand in respectively the statue finger. The name of this sealed jutsu was "Fuuinjutsu Gernyu Kyuu Fuujin".
Untill now akatsuki has been gotten seven of nine bijuus. To do this sealed jutsu needed large amount of Chakra, so they always feel exhausted for a moment after finishing Fuuinjutsu Gernyu Kyuu Fuujin. Killer Bee... Naruto... Goodluck.
Please share and enjoy: