This carburetor jet kit includes all the carburetor jets and jet needles you need for adjusting your carburetor. Contents:Main jet KEIHIN sizes 175, 178, 180, 182, 185, 188, 190, 192, 195, 198, 2003 of each size. Idle jet KEIHIN sizes 40, 42, 45, 48, 503 of each size. Jet needle KEIHIN OBDTN, OBDTR, OBDP, OBDTQ 3 of each.