My wife asked me to get a set of Ben Wa Balls. They are two silver balls about 1 1/2" in diameter and have a bell sound when you shake them. Look like ball bearings. My wife loves them inside her when I masturbate her. She says her orgasm is extremely intense when they are inserted about 2" or so. I usually place them inside a condom and then insert both, as by using a condom they are easier to remove. Can any women that has used these before describe to me why they feel so good to you? Do you think I should insert them further inside or more nearer the opening? As she enjoys them so much I want to be sure I get it right from a woman's point of view. Thanks.