Transact SQL :: Split A String And Store As First And Second Part

I am using SQL Server 2008. I have strings like this:

AB-123
CDW-32
declare @First_Part varchar(3)
declare @Second_Part varchar(5)

I want to split the string with delimiter '-' and store as first part and second part.

I saw few sample functions to split a string but these return table of values.

I simply want first part and second part.

In above examples context:

@First_Part = 'AB'
@Second_Part = '123'

Any simple way to do this?