This design allows you to squeeze and pull on your submissive's nipples. This Nipple Stretcher includes to two Clover Clamps at each end of rod. Once claps are attached, screw in the ball rod and start stretching their nips! Simply turn the ball to pull the rod further away from their chest, making the clover clamps pull more. Keep them on the edge as they see you reach for the ball to turn it.