PZ Racing CR2.1 Carbon Chainset

just found a PZ Racing CR2.1 Carbon Chainset for a great price but I don't know anything about them and can't seem to find much information on this crank,

Does anyone know anything about these cranks********** Also it requires a shimano Octalink bottom bracket which is not included. Are shimano Octalink bottom brackets standard sizes??

any help would be most appreciated

Thanks