The Bill Of Materials (BOM) for the additional hardware needed to assemble is directly linked within the Instructions on page 4. For reference, I have put a screenshot of the BOM in the photo gallery.

PLEASE REFERENCE THE IMAGE CONTAINING STL FILE KEY FOR INSIGHT INTO WHAT FILES TO EXPECT.

THE MAIN ITEMS IN THE DOWNLOAD LINK ARE AS FOLLOWS:

Folder: NeedsSupported

Folder: NoSupportNeeded

PDF: Capsule Instructions

This capsule features a spring mechanism that assists with the synchronous opening of the capsule doors. In addition, there is a detailed assembly guide included to walk through how to assemble the capsule. This capsule was designed specifically to work with the Race Against Time Omnitrix listed here:

https://www.wf3d.shop/collections/kacosplaytech/products/ben-10-race-against-time-omnitrix-pop-up-3d-printable-file

These models have been tested and used with cosplays to ensure they work as intended

B3n 10 Bundl3

Ben 10 Race Against Time Omnitrix Pop Up 3D Printable File

Ben 10 Alien Force Omnitrix Pop Up 3D Printable File

Ben 10 Capsule For Race Against Time Omnitrix

Ben 10,000 Omnitrix 3D Model