THIS IS A NEW SET OF (4) 1957-1958 CHEVROLET BEL AIR WHEEL SPINNERS WITH ATTACHING HARDWARE. THESE CAN BE ADDED TO ANY 57 BEL AIR AND 1958 IMPALA HUB CAPS AND ARE VERY EASY TO INSTALL. YOU WILL NEED TO FLATTEN THE SMALL HALF MOON TABS ON THE METAL RETAINERS TO USE THESE ON A 58. SKU 5665