You are basically doing a biopsy on your slaves erectile tissue 😀 Can you imagine the damage that does? Poor poor puppy had to watch helplessly while I was piercing my little manclit with 101 needles.
Castration of CBT slave by burdizzo and injections
So when in doubt GO BIG! You have the Castration Club video little slave, if your mistress follows the instructions in the video, your castration will be final and perfect 🙂 P.