Thread size: 16pcs M5*0.8, 16pcs M5*0.75; only for certain Chinese VM series.
The m5*0.8 main jet is often used in the 35mm main jet tube, while the m5*0.75 main jet is often used with the 39mm main jet tube.
Lazy Kit: It is hard to distinguish between the two sizes, so we just put them into one kit. Please note that if you buy the kit, only half of them will fit your Chinese VM carb.