How many grams can the slave’s nipples and labia still withstand?

The last few days I had to add 250g, but that still wasn’t enough for my master. I’m still too quiet for him, and my nipples and labia aren’t stretched long enough. I also don’t moan enough for him. So today it was increased to 300g. He liked me much better with that. But I’m afraid he wants more. What do you think, how much can they handle? #greattits #nipples #labia