It says on their website that they fit all makes and models of trumpet mouthpiece. But who knows for sure? Can you get one from a firm like mouthpieceexpress.com so you can playtest and return if they don't work out for you?
They are designed to fit all mouthpieces that have the external shape of Bach. They don't fit very well DW (odd, uhh?) and schilke. Any mouthpiece that has essentially different external shape risk not to fit well.