97-04 Corvette Z06 C5 Racing Lug Nuts 12x1.5 Black 20 Pieces 4 rims,each rim need 5 lug nuts.you will receive 20 pieces of lug nuts in total A7075-T6 Forged Aluminum, 100% Brand New Racing Lug nuts 12mm x 1.5 Pitch Thread Light-weight 66% Reduction in Weight,No Special Tools Required for Installation Uses a Regular 19mm Socket,Uses a Regular Oem Tool That comes with car