There are multiple artists with this name: 1) A thrash metal band from Sydney, Australia formed in 2000. 2)S h a c k l e s is a Norwegian duo known from the 2009 edition of X-Factor (formerly a band with four members). 3) A dubstep DJ from the UK. 4) Fast, heavy and pissed off hardcore from the beach, in the vein of Infest/Mind Eraser/Napalm Death. 1)
Shackles is a death/thrash metal band from Sydney, Australia formed in 2000.

Read more about Shackles on Last.fm.