The Essel Magic Jumbo Re-Appearing Die, Jumbo by The Essel Magic

You show a plastic box and slide off the cover. Inside are three different colored dice inside which fill the entire box. One die is removed from the box and placed in your pocket. Close the box and invisibly throw the die at the box. Open up the box and the die has re-appeared! Close the box and pull the die out of your pocket then remove the lid. Only two dice inside the box. Repeat as often as you wish.
This is a very clever mechanical effect that is virtually self-working. No sleights or false moves. The method is diabolical.

Colors may vary.