Another Machined Surgical Stainless Steel plug with a Thru-hole. It comes with two different sized Glans rings for that perfect fit. A perfect size plug for the beginner or the guy that wants to wear a plug with comfort. The thru-hole is used for bodily functions. Length: 42.5mm insert length: 39mm diameter of 7mm ring diameter 30mm and 25MM . Incredible E-stim plug.