When I declare a variable it shows Error 91 when I create a Variable ¿Any Idea of why that happens?

Question

Basically when I do this on Excel VBA it works great:

Range(Cells(2, "K"), Cells(FilaFinalK, "K")).Select

But when I declare it as a variable and then select it, it gives me error 91.

Dim List As Range 
List = Range(Cells(2, "K"), Cells(FilaFinalK, "K"))
List.Select

¿Can any one help me sith this please?