I got them from Brakeworld.com They do slot and drill them for a left and right but the issue is they are using two left rotors (blanks) to drill and slot. the Crossfire uses curved vane cooling vents which you cannot see in a picture. What you are looking at in the picture is machined slots and drilled holes. I wouldn't waste the money on Disc Italia as they are identical to the cheap Ebay rotors I bought. the ebay rotors actually had a better coating on them to prevent rust. I would reccomend you verify where the rotor blanks were cast (foundry) China is crap, USA, Japan, and Europe are good. I doubt Disk Italia are from Italy. they are exactly the same casting as my chinese rotors. No where in the Disc Italia box or paperwork did they say they acutally were made in Italy. The Power slots mentioned above would be a better choice if they are really right and left rotors. you can usually spot Chinese rotors becasue they don't take the time or expense to reproduce both left and right direcitonal rotors. I hope this is clear as I am not talking about the slots or drill holes.