This piece is made from 316LVM Surgical Steel and is over 13cm(5") long and 0.8cm(0.3") in diameter at its largest part so it is an awesome starter penis plug or a play plug. It has humps (eggs) that will give you additional pleasure, so when you think you have reached your max then another speed hump comes along :-) . This piece can be used by both genders. It had a ring on the end so that you do not over insert during playtime. It is a fully solid piece.