The great thing about art like this is that a prisoner can be tortured WAY more and WAY harder than in real life.
This artwork is by Sparkie Shock, and it shared here with his permission. If you like, you can support him — and see MUCH more like this, at his Patreon page, available here. He also does animated videos!
Also look for Sparkie at Just For Fans and OnlyFans, where he has even more hardcore content!