The Kobe Bryant pivot series basketball drills are all about learning how to finish with a defender on your hip. Once you get that defender on your hip they are at your mercy, if you have the right moves to finish around the basket. It is important that you maintain control of your body momentum as you drive to the basket.
Probably the most important key to the pivot series is having good footwork. If you don't have good footwork then you won't be able to sell your move, and you will most likely travel even if you do. So even if you never use this move in a game it is still a good basketball drill to work on footwork around the basket, and learning how to pivot.