Push Down - 

Bands Pronated

Muscles Used: Triceps, Forearms.

Modified Exercise:

Modified Dips

Advanced Exercise:

Prone Skull Crusher

Push Down - 

Bands Neutral

Muscles Used: Triceps, Forearms.

Modified Exercise:

Banded Tricep Kickback

Advanced Exercise:

Neutral Grip DB Skull Crusher

Push Down - 

Bands Supinated

Muscles Used: Triceps, Forearms.

Modified Exercise:

Banded Skull Crusher

Advanced Exercise:

Reverse Close Grip Bench