Extreme, that's just mind boggling to see the weight and strain you're putting on your penis, but impressive. The method I am using is the swim cap (2 sheets) and can tie 15lbs without slippage for about 15 minutes. I am interested in how you're creating the grip and how you're preventing injury (blisters and discoloration). I see from your picture from another thread that there seems to be a lot of foreskin darkening and foreskin pull from the grip.
Can you explain a bit more on how you're hanging please?
Can you provide some more pictures on the progress, maybe the hanger you're using?
It looks like you're semi-erect in the picture too, unless that's your flaccid girth while stretching which is just insane.
Thanks,
Monet