Tap Dancer Curve Barbell is 14g, 11mm long with 3 Captive Bead Rings. It is effective when you are walking without the underwear, You will feel all 3 rings tap tap tap on the clit. You hear the noise too when they tap tap tap. It is also effective when you are going on the stair or riding a bike or thread mill. By the way rings are removable so you can move one and keep two or how you like them. Last word remember it is made of Surgical Steel and the imagine 3 cold steel rings and 3 cold steel balls combination hitting you down there. That is a perfect to make you feel xTc.