Hard to say for sure, since many manufacturer have similar styles. For example these two, but i'm sure there are others.
Predator wheels
http://www.predatorwheels.eu/index.p...d=ripper-wheel
MMR GT1
http://www.mrrwheels.com/gt1.html
I think it is MMR, based on the fact that Predator is company at Europe. Is there any markings backside of the wheel?