Download Qbcore Inventory Rar -

: The standard, slot-based inventory maintained by the QBCore Team.

The "interesting piece" you might be referring to could be one of several popular custom redesigns or forks of the standard system:

qbcore-framework/qb-inventory: Slot Based Inventory ... - GitHub

: A very popular, highly customized fork known for its modern UI and clean design, often considered a "must-have" for high-quality roleplay servers.