i have one of these machines you can hookup all size.s of dildos but i have a favorate its 14inches long very thick 12inch gerth thicker then a beercan i have a hard time getting it in but if i finger myself for a bit it ges in Nice i can take it all i fuck myself for about 2hours then i cum without touching my cock Forgot to say Im a Guy i have a huge collection of dildos about 35 all 12inches and bigger feels Fucken amazing pumping my Ass with monster dildos