STUDCOLLAR-GLANS-RING consists of a stainless steel ring with an inside diameter of 30mm and a 9mm stainless steel ball. The ring is approximately 3mm thick. It is designed for a snug fit around the penis head with the ball adding extra pressure and sensation to the glansSTUDCOLLAR-GLANS-RING may assist in erection problems caused by diabetes, high blood pressure, medication side effects for high blood pressure, heart medications, sleeping pills, antidepressants, worry, concern, stress, etc, etc. These problems are more common in older men but can affect men at any age and at any time in their lives. Wearing a STUDCOLLAR-GLANS-RING gives increased confidence which can lead to a longer lasting and harder erection.