5 to 6 but to my opinion highly depends on;
1. Age- young inexperience girls have got tight pussies which can hardly take 5
2. Whether a woman has given birth naturally and the type of stitch received after cut.
3 PC exercises. Certain tribes in Africa have been known to train their young adult girls how to tighten the PC muscles through special practices.This helped the ladies to accommodate any size with ease to avoid disappointments after marriage