Transport Charge Collect - Crusher

Respected sir🙏..
My client runs Blue Metal Crusher. He claims GST ITC for spares for his lorry.
1) Now when he sells, should he show the freight amount separately or can he show the total along with the blue metal rate?
2) If lorry freight is to be shown separately then 5% or 12% which of these should be shown..
I humbly request you to explain me how to show lorry freight in Tax Invoice..🙏