Brake Disc Type:two-part brake disc. Item: Brake Disc. Specification of this Brake Disc. Brake Disc Thickness [mm]:30,0. OE/OEM Reference Part Number:000 421 21 12. Number of Holes:5. The only way to be 100% sure that the part will fit your vehicle is to check the part number (OEM Number) on your original unit matches one of the above.