Knitter's PrideKP200608 Dreamz Deluxe Special Interchangeable Needles Set

What is the length difference between the long and short tips?

can the longer cables be used with the special short tips that come with 8" cables?

I love them, my only complaint is they don't incluce a #1, #2 or #3, and I have not been able to find where to buy just those points to add to my set.

What are the length of the cables?