Killer Offset 4 x 20mm, Wheel Spacers, Radius Bolts, Audi A4, A5, 5x112 66.5. For Audi models with 5x112 stud pattern with a 66.6 centre bore. PCD/ BOLT PATTERN - 5x112. WIDTH - 20mm x 4. Radius bolts for use with factory OE Audi alloy wheels.