They are both made by GuzziTech.
I know them, that is Ed Milich and they are well done. I have a pair of his adapters for my Pantah.
Those adapters are NOT for the later 40mm type (5156 caliper) bikes. Those are for bikes with the F08 two-piston calipers (which were used with 260, 280 and 300mm rotors)
The ones YoYodyne has are correct, but they are Brembo and can be bought from any brembo dealer.