This erection inhibiting device is made of durable stainless steel and features a shortened cage with a locking base piece. Simply place him in the cage and fasten the base ring using the simple pin mechanism. The hinged base ring has a rubber sleeve at the joint to prevent pinching. Then just place the pin through the top of the cage and secure him with the included lock and keys. You decide when he is free. Measurements Cage 4 inches in length, 1.4 inches inner diameter, Base ring 1.75 inches inner diameter Material Stainless steel, rubber