[NaS]

If you don't have any col for it, generate one using kdff.exe and afterwards attach the .col you generated.

Code:

kdff.exe -g mesh -d model.dff -o model.col
kdff.exe -a -d model.dff -c model.col -o modelC.dff

https://sampforum.blast.hk/showthread.php?tid=644075