Eighteen inch blue tube
I stuff an 18 inch tube into my dick all the way. The tube is marked and shows how much of the tube is in my bladder. The first mark is where the tube has entered my bladder, then there is a mark every 1/2 inch up to the 2 inch mark, and then there are marks an inch apart for 3, 4, and 5 inches. The end of the tube extends one more inch. Sorry about the poor video quality.