Nipple coach for the stretching of your nipples. The inside diameter for the nipple is 15mm. The outer mass is approx. 35 x 50mm, the nipples can either be inserted without accessories. Or there is also the possibility to fasten it with an existing piercing with the enclosed transverse rod. The 2nd ring is then screwed on with the 4 screws. Material stainless steel. Total weight of both approx. 120 grams.