Sizes - 2 each 60-61-62-63-64-65-66-67-68-69 Holley Main Jets (20 OF THEM) 1/4"-32 UNF Unified Fine Thread Use In Street & Race Applications Fits Holley & Holley Style Carburetors Including AED, Barry Grant, Quick Fuel, Demon, Avenger, Etc.. These Will Come In A Plastic Storage Container (20 INDIVIDUAL JETS) 60 0.060"/1.524 mm 61 0.060"/1.524 mm 62 0.061"/1.5494 mm 63 0.062"/1.5748 mm 64 0.064"/1.6256 mm 65 0.065"/1.651 mm 66 0.066"/1.6764 mm 67 0.068"/1.7272 mm 68 0.069"/1.7526 mm 69 0.070"/1.778 mm Note: Default Sizes -2 each 60-61-62-63-64-65-66-67-68-69 If you need other sizes, please let us know the quantity and size of the products you need by email, or indicate the quantity and size of the products when making payment. We will ship based on the quantity and size! At least 2 of each size Holly Carburetor MAIN JETS Assortment Kit 1/4-32 main jets 60 -69，We package them 2 each size