This carburetor jet kit includes all the carburetor jets and jet needles you need for adjusting your carburetor.Contents:3x FCR-MX needles. Main jet sizes 160, 162, 165, 168, 170, 172, 175, 178, 1803 of each size. Idle jet sizes 38, 40, 423 of each size. Start jet 65, 70, 75, 80, 853 of each size. 3x idle jet size 100 KEIHIN.3x closed Power Jet KEIHIN.Power Jet 50, 60, 70 KEIHIN 3 of each size. Jet needle KEIHIN OBEKT, OBETP, OBETN, OBDYS 3 of each.