what spurdy said,
anyways i have the same ones, ITP C Series rims on my sand star set of tires., it should just take a 14mm socket, my stocker rims have washers on them and i cant fit the washers in the cavern of the ITP-C rims but its all good. I went to lowes and baught 16 new nuts in 8mmx1.25 in stainless and they look good on there.