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First of all, the cage is polished to a mirror sheen. The ring's been replaced with a reinforced version, and it meshes perfectly with the cage. The ring itself has been iron-welded and scraped down multiple times for maximum stability.
The front strap has been tightened to make it sit flush against the body. That prevents any slipping. The lock system's original too. It's a concealed integrated type. It's got a smaller front spacer, giving it superior tight fit.
The regular cage's been replaced with a micro cage. That enhances the cock control and increases its tightness. They also reworked the locking pin to accommodate the micro cage. It looks like they eliminated it altogether.
This is a tool for pros.