What is the largest and loosest fleshlight you know?

I'm a dude with particular tastes: I like them big. And I don't mean any of these half-body dolls. What I am looking for is a "regular" fleshlight, instead just being about twice the regular size of itself. I'm looking for the "hotdog in a hallway" experience.

I have looked at many websites that offer equine fleshlights, but they all come down to the same fault. They may show a large vulva front, as expected, but the inside is made to regular human dimensions, being tight. Which I mean, I get it, this is necessary to deliver pleasure. But I am a weirdo, I want to struggle with that thing. And I love fisting; For satisfying a top fantasy, I want to be able to put my arm in there and have some wiggleroom left to spare. THAT is the kind of loose I am looking for. Some equine experience. Which, I know, is huge. Maybe impossibly so.

The largest fleshlight I own is of a canine by AmericanMeat (the large option has an inner diameter of 3cm). But even their own equine is not larger than that.

I also went through BadDragon, FetishZone, SidewinderCreations, YiffyToys, GaudyGryphon, WereDog, DirtyDogs and FantasyToyBox. I think at this point I need to ask for an entirely custom model, because I am out of options.

Price is not a concern. I am located in Europe.

EDIT: I just realized that "Fleshlight" is a brand name. I am talking about silicone masturbators in general.