Fit For: Wltoys Remote Control Car A949 A959 A969 A979 K929(Make sure the product wether match your original device, thank you)
Role: make the two shafts rotate at different speeds with each other.
Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above,
please make allowance for it,thank you
1 x Remote Control Car Transmission