Once you have inserted the plug, you can insert vibrators, lubricants or any other object you want through the opening. The anal dilator tunnel has a length of 102 mm and a maximum diameter of 57 mm. It is also perfect as an anal tunnel for penis enlargement. Features: Total length: 13.5 cm; Total diameter: 6 cm; Insertable length: 12.5 cm; Small ring diameter: 4.5 cm; Large ring diameter: 6 cm; Material: TPE; Waterproof; Phthalate-free