This primer tube and extra parts storage block fits on the Inline Fabrication Hornady powder dropper dock storage and is secured by the included printed plastic bolt. There's plenty of tube and follower storage in case you've collected a few and a spot for the spare anvil and shuttle that you aren't using (see pics).

The lip on the bottom of the block faces the wall side.

Prints with no supports.

Printables Tags: inlinefabrication; reloading; primertube; hornady