2013 Sram XO carbon cranks

For sale is a a set of XO carbon cranks. In very good condition with Clearsheild installed on the crank arms. 68 / 73mm spacing.No bottom bracket included. 170mm arm length. I bought these from a fellow Pinkbike member who told me they were for an 83mm BB. My fault for not double checking. I would be willing to trade for 83mm XO carbon cranks plus cash if needed. No low ballers please.